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/* Battle Tanks Game
* Copyright (C) 2006-2009 Battle Tanks team
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
* Additional rights can be granted beyond the GNU General Public License
* on the terms provided in the Exception. If you modify this file,
* you may extend this exception to your version of the file,
* but you are not obligated to do so. If you do not wish to provide this
* exception without modification, you must delete this exception statement
* from your version and license this file solely under the GPL without exception.
*/
#include "label.h"
#include "sdlx/font.h"
#include "sdlx/surface.h"
#include "sdlx/rect.h"
#include "resource_manager.h"
#include "i18n.h"
#define LABEL_SPEED (30)
Label::Label(const sdlx::Font *font, const std::string &label) :
_font(font), _label(label), _max_width(0), _max_height(0), x_pos(0), x_vel(LABEL_SPEED) {
_font->render_multiline(_label_w, _label_h, NULL, 0, 0, label);
}
Label::Label(const std::string &font, const std::string &label) :
_font(ResourceManager->loadFont(font, true)), _label(label),
_max_width(0), _max_height(0), x_pos(0), x_vel(LABEL_SPEED) {
_font->render_multiline(_label_w, _label_h, NULL, 0, 0, label);
}
void Label::get_size(int &w, int &h) const {
w = (_max_width == 0 || _label_w < _max_width) ? _label_w: _max_width;
h = _label_h;
}
void Label::setFont(const std::string &font) {
_font = ResourceManager->loadFont(font, true);
_font->render_multiline(_label_w, _label_h, NULL, 0, 0, _label);
}
void Label::set(const std::string &label) {
_label = label;
_font->render_multiline(_label_w, _label_h, NULL, 0, 0, _label);
}
void Label::set(const std::string &base, const std::string &id) {
_label = I18n->get(base, id);
_font->render_multiline(_label_w, _label_h, NULL, 0, 0, _label);
}
const std::string Label::get() const {
return _label;
}
void Label::render(sdlx::Surface& surface, int x, int y) const {
if (_max_width <= 0) {
_font->render_multiline(_label_w, _label_h, &surface, x, y, _label);
return;
}
//smooth scrolling
sdlx::Rect clip;
surface.get_clip_rect(clip);
surface.set_clip_rect(sdlx::Rect(x, y, _max_width, _max_height));
_font->render_multiline(_label_w, _label_h, &surface, x - (int)x_pos, y, _label);
surface.set_clip_rect(clip);
}
void Label::set_size(const int w, const int h) {
LOG_DEBUG(("setting maximum size %dx%d", w, h));
_max_width= w;
_max_height = h;
}
#define MARGIN 10
#define OVERLAP 4
void Label::tick(const float dt) {
TextualControl::tick(dt);
if (_max_width <= 0 || _label_w <= _max_width) {
x_pos = 0;
return;
}
int delta = _label_w - _max_width;
//LOG_DEBUG(("%d",delta));
float m = delta >= MARGIN? 1.0f: 1.0f * (delta + MARGIN / 2) / (MARGIN + MARGIN / 2);
x_pos += x_vel * dt * m;
if (x_pos + _max_width - OVERLAP > _label_w) {
x_pos = _label_w - _max_width + OVERLAP;
x_vel = -LABEL_SPEED;
}
if (x_pos < - OVERLAP) {
x_pos = -OVERLAP;
x_vel = LABEL_SPEED;
}
}
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