Initial commit

engines/ultima/ultima8/gumps/widgets/sliding_widget.cpp

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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 3 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, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "ultima/ultima8/gumps/widgets/sliding_widget.h"
+
+namespace Ultima {
+namespace Ultima8 {
+
+DEFINE_RUNTIME_CLASSTYPE_CODE(SlidingWidget)
+
+SlidingWidget::SlidingWidget()
+	: Gump(), _dragBounds() {
+}
+
+SlidingWidget::SlidingWidget(int x, int y, FrameID frame, const Common::Rect32 &dragBounds)
+	: Gump(x, y, 5, 5, 0, FLAG_DRAGGABLE), _dragBounds(dragBounds) {
+	SetShape(frame, true);
+	if (_dragBounds.width() < _dims.width())
+		_dragBounds.setWidth(_dims.width());
+	if (_dragBounds.height() < _dims.height())
+		_dragBounds.setHeight(_dims.height());
+}
+
+SlidingWidget::~SlidingWidget() {
+}
+
+int SlidingWidget::getValueForRange(int min, int max) {
+	int val = min;
+	if (_dragBounds.isValidRect()) {
+		val = min + (_x - _dragBounds.left) * (max - min) / (_dragBounds.width() - _dims.width());
+		if (val < min)
+			val = min;
+		if (val > max)
+			val = max;
+	}
+	return val;
+}
+
+void SlidingWidget::setValueForRange(int value, int min, int max) {
+	assert(_dragBounds.isValidRect());
+	_x = _dragBounds.left + (value - min) * (_dragBounds.width() - _dims.width()) / (max - min);
+}
+
+void SlidingWidget::InitGump(Gump *newparent, bool take_focus) {
+	Gump::InitGump(newparent, take_focus);
+
+	UpdateDimsFromShape();
+}
+
+uint16 SlidingWidget::TraceObjId(int32 mx, int32 my) {
+	if (PointOnGump(mx, my))
+		return getObjId();
+	else
+		return 0;
+}
+
+void SlidingWidget::Move(int32 x, int32 y) {
+	if (_dragBounds.isValidRect()) {
+		if (x < _dragBounds.left)
+			x = _dragBounds.left;
+		if (x > _dragBounds.right - _dims.width())
+			x = _dragBounds.right - _dims.width();
+		if (y < _dragBounds.top)
+			y = _dragBounds.top;
+		if (y > _dragBounds.bottom - _dims.height())
+			y = _dragBounds.bottom - _dims.height();
+	}
+
+	_x = x;
+	_y = y;
+}
+
+void SlidingWidget::onDrag(int32 mx, int32 my) {
+	Gump::onDrag(mx, my);
+	_parent->ChildNotify(this, DRAGGING);
+}
+
+void SlidingWidget::saveData(Common::WriteStream *ws) {
+	Gump::saveData(ws);
+}
+
+bool SlidingWidget::loadData(Common::ReadStream *rs, uint32 version) {
+	if (!Gump::loadData(rs, version)) return false;
+
+	return true;
+}
+
+} // End of namespace Ultima8
+} // End of namespace Ultima