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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* 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 (at your option) 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*/
#include "teenagent/font.h"
#include "teenagent/resources.h"
namespace TeenAgent {
Font::Font() : grid_color(0xd0), shadow_color(0), height(0), width_pack(0), data(0) {
}
void Font::load(int id) {
delete[] data;
data = NULL;
Common::SeekableReadStream *s = Resources::instance()->varia.getStream(id);
if (s == NULL)
error("loading font %d failed", id);
data = new byte[s->size()];
s->read(data, s->size());
debug(0, "font size: %d", s->size());
}
uint Font::render(Graphics::Surface *surface, int x, int y, char c, byte color) {
unsigned idx = (unsigned char)c;
if (idx < 0x20 || idx >= 0x81) {
debug(0, "unhandled char 0x%02x", idx);
return 0;
}
idx -= 0x20;
byte *glyph = data + READ_LE_UINT16(data + idx * 2);
int h = glyph[0], w = glyph[1];
if (surface == NULL || surface->pixels == NULL || y + h <= 0 || y >= 200 || x + w <= 0 || x >= 320)
return w - width_pack;
int i0 = 0, j0 = 0;
if (x < 0) {
j0 = -x;
x = 0;
}
if (y < 0) {
i0 = -y;
y = 0;
}
//debug(0, "char %c, width: %dx%d", c, w, h);
glyph += 2;
glyph += i0 * w + j0;
byte *dst = (byte *)surface->getBasePtr(x, y);
byte *end = (byte *)surface->getBasePtr(0, surface->h);
for (int i = i0; i < h && dst < end; ++i) {
for (int j = j0; j < w; ++j) {
byte v = *glyph++;
switch (v) {
case 0:
break;
case 1:
dst[j] = shadow_color;
break;
case 2:
dst[j] = color;
break;
default:
dst[j] = v;
}
}
dst += surface->pitch;
}
return w - width_pack;
}
static uint find_in_str(const Common::String &str, char c, uint pos = 0) {
while (pos < str.size() && str[pos] != c) ++pos;
return pos;
}
uint Font::render(Graphics::Surface *surface, int x, int y, const Common::String &str, byte color, bool show_grid) {
if (surface != NULL) {
uint max_w = render(NULL, 0, 0, str, false);
if (show_grid)
grid(surface, x - 4, y - 2, max_w + 8, 8 + 6, grid_color);
uint i = 0, j;
do {
j = find_in_str(str, '\n', i);
Common::String line(str.c_str() + i, j - i);
//debug(0, "line: %s", line.c_str());
if (y + (int)height >= 0) {
uint w = render(NULL, 0, 0, line, false);
int xp = x + (max_w - w) / 2;
for (uint k = 0; k < line.size(); ++k) {
xp += render(surface, xp, y, line[k], color);
}
} else if (y >= 200)
break;
y += height;
i = j + 1;
} while (i < str.size());
return max_w;
} else {
//surface == NULL;
uint w = 0, max_w = 0;
for (uint i = 0; i < str.size(); ++i) {
char c = str[i];
if (c == '\n') {
y += height;
if (w > max_w)
max_w = w;
w = 0;
continue;
}
w += render(NULL, 0, 0, c, color);
}
if (w > max_w)
max_w = w;
return max_w;
}
}
void Font::grid(Graphics::Surface *surface, int x, int y, int w, int h, byte color) {
byte *dst = (byte *)surface->getBasePtr(x, y);
for (int i = 0; i < h; ++i) {
for (int j = 0; j < w; ++j) {
if (((i ^ j) & 1) == 0)
dst[j] = color;
}
dst += surface->pitch;
}
}
Font::~Font() {
delete[] data;
}
} // End of namespace TeenAgent
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