1 files changed, 112 insertions, 0 deletions
diff --git a/engines/gob/minigames/geisha/meter.cpp b/engines/gob/minigames/geisha/meter.cpp
new file mode 100644
index 0000000000..82318a303d
--- /dev/null
+++ b/engines/gob/minigames/geisha/meter.cpp
@@ -0,0 +1,112 @@
+/* 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.
+ *
+ */
+
+#include "common/util.h"
+
+#include "gob/surface.h"
+
+#include "gob/minigames/geisha/meter.h"
+
+namespace Gob {
+
+namespace Geisha {
+
+Meter::Meter(int16 x, int16 y, int16 width, int16 height, uint8 frontColor,
+             uint8 backColor, int32 maxValue, Direction direction) :
+	_x(x), _y(y), _width(width), _height(height), _frontColor(frontColor),
+	_backColor(backColor), _value(0), _maxValue(maxValue), _direction(direction),
+	_needUpdate(true), _surface(0) {
+
+}
+
+Meter::~Meter() {
+	delete _surface;
+}
+
+int32 Meter::getValue() const {
+	return _value;
+}
+
+void Meter::setValue(int32 value) {
+	value = CLIP<int32>(value, 0, _maxValue);
+	if (_value == value)
+		return;
+
+	_value = value;
+	_needUpdate = true;
+}
+
+void Meter::increase(int32 n) {
+	int32 value = CLIP<int32>(_value + n, 0, _maxValue);
+	if (_value == value)
+		return;
+
+	_value = value;
+	_needUpdate = true;
+}
+
+void Meter::decrease(int32 n) {
+	int32 value = CLIP<int32>(_value - n, 0, _maxValue);
+	if (_value == value)
+		return;
+
+	_value = value;
+	_needUpdate = true;
+}
+
+void Meter::draw(Surface &dest, int16 &left, int16 &top, int16 &right, int16 &bottom) {
+	if (!_surface) {
+		_surface = new Surface(_width, _height, dest.getBPP());
+		_needUpdate = true;
+	}
+
+	update();
+
+	left   = CLIP<int16>(_x              , 0, dest.getWidth () - 1);
+	top    = CLIP<int16>(_y              , 0, dest.getHeight() - 1);
+	right  = CLIP<int16>(_x + _width  - 1, 0, dest.getWidth () - 1);
+	bottom = CLIP<int16>(_y + _height - 1, 0, dest.getHeight() - 1);
+
+	dest.blit(*_surface, left - _x, top - _y, _width, _height, left, top);
+}
+
+void Meter::update() {
+	if (!_needUpdate)
+		return;
+
+	_needUpdate = false;
+
+	_surface->fill(_backColor);
+
+	int32 n = floor((((float) _width) / _maxValue * _value) + 0.5);
+	if (n <= 0)
+		return;
+
+	if (_direction == kFillToLeft)
+		_surface->fillRect(_width - n, 0, _width - 1, _height - 1, _frontColor);
+	else
+		_surface->fillRect(0         , 0, n - 1, _height - 1, _frontColor);
+}
+
+} // End of namespace Geisha
+
+} // End of namespace Gob