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engines/crab/ui/button.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/>.
+ *
+ */
+
+/*
+ * This code is based on the CRAB engine
+ *
+ * Copyright (c) Arvind Raja Yadav
+ *
+ * Licensed under MIT
+ *
+ */
+
+//=============================================================================
+// Author:   Arvind
+// Purpose:  Contains the button functions
+//=============================================================================
+#include "crab/crab.h"
+#include "crab/input/cursor.h"
+#include "crab/ui/button.h"
+
+namespace Crab {
+
+using namespace pyrodactyl::ui;
+using namespace pyrodactyl::image;
+using namespace pyrodactyl::input;
+using namespace pyrodactyl::music;
+using namespace pyrodactyl::text;
+
+//------------------------------------------------------------------------
+// Purpose: Constructor
+//------------------------------------------------------------------------
+Button::Button() {
+	_visible = false;
+	_canmove = false;
+	_seClick = -1;
+	_seHover = -1;
+	_hoverPrev = false;
+	reset();
+}
+//------------------------------------------------------------------------
+// Purpose: Load a new Button from a file
+//------------------------------------------------------------------------
+void Button::load(rapidxml::xml_node<char> *node, const bool &echo) {
+	_img.load(node, echo);
+	Element::load(node, _img._normal, echo);
+
+	loadNum(_seClick, "click", node, echo);
+	loadNum(_seHover, "hover", node, echo);
+
+	if (nodeValid("hotkey", node, false))
+		_hotkey.load(node->first_node("hotkey"));
+
+	_tooltip.load(node->first_node("tooltip"), this);
+	_caption.load(node->first_node("caption"), this);
+
+	_visible = true;
+	_canmove = false;
+	reset();
+}
+//------------------------------------------------------------------------
+// Purpose: Load a new Button
+//------------------------------------------------------------------------
+void Button::init(const Button &ref, const int &xOffset, const int &yOffset) {
+	_img = ref._img;
+	Element::init(ref, _img._normal, xOffset, yOffset);
+	_seClick = ref._seClick;
+	_seHover = ref._seHover;
+
+	_caption.init(ref._caption, xOffset, yOffset);
+	_tooltip.init(ref._tooltip, xOffset, yOffset);
+
+	_visible = true;
+	_canmove = false;
+	reset();
+}
+//------------------------------------------------------------------------
+// Purpose: Reset the button
+//------------------------------------------------------------------------
+void Button::reset() {
+	_mousePressed = false;
+	_hoverMouse = false;
+	_hoverKey = false;
+}
+//------------------------------------------------------------------------
+// Purpose: Draw
+//------------------------------------------------------------------------
+void Button::draw(const int &xOffset, const int &yOffset, Rect *clip) {
+	if (_visible) {
+		if (_mousePressed) {
+			g_engine->_imageManager->draw(x + xOffset, y + yOffset, _img._select, clip);
+
+			_tooltip.draw(xOffset, yOffset);
+			_caption.draw(true, xOffset, yOffset);
+		} else if (_hoverMouse || _hoverKey) {
+			g_engine->_imageManager->draw(x + xOffset, y + yOffset, _img._hover, clip);
+
+			_tooltip.draw(xOffset, yOffset);
+			_caption.draw(true, xOffset, yOffset);
+		} else {
+			g_engine->_imageManager->draw(x + xOffset, y + yOffset, _img._normal, clip);
+			_caption.draw(false, xOffset, yOffset);
+		}
+	}
+}
+
+void Button::imageCaptionOnlyDraw(const int &xOffset, const int &yOffset, Rect *clip) {
+	if (_visible) {
+		if (_mousePressed) {
+			g_engine->_imageManager->draw(x + xOffset, y + yOffset, _img._select, clip);
+			_caption.draw(true, xOffset, yOffset);
+		} else if (_hoverMouse || _hoverKey) {
+			g_engine->_imageManager->draw(x + xOffset, y + yOffset, _img._hover, clip);
+			_caption.draw(true, xOffset, yOffset);
+		} else {
+			g_engine->_imageManager->draw(x + xOffset, y + yOffset, _img._normal, clip);
+			_caption.draw(false, xOffset, yOffset);
+		}
+	}
+}
+
+void Button::hoverInfoOnlyDraw(const int &xOffset, const int &yOffset, Rect *clip) {
+	if (_visible) {
+		if (_mousePressed || _hoverMouse || _hoverKey)
+			_tooltip.draw(xOffset, yOffset);
+	}
+}
+
+//------------------------------------------------------------------------
+// Purpose: Handle input and stuff
+//------------------------------------------------------------------------
+ButtonAction Button::handleEvents(const Common::Event &event, const int &xOffset, const int &yOffset) {
+	Rect dim = *this;
+	dim.x += xOffset;
+	dim.y += yOffset;
+
+	if (_visible) {
+		if (dim.contains(g_engine->_mouse->_motion.x, g_engine->_mouse->_motion.y)) {
+			_hoverMouse = true;
+
+			if (!_hoverPrev) {
+				_hoverPrev = true;
+				g_engine->_musicManager->playEffect(_seHover, 0);
+			}
+		} else {
+			_hoverPrev = false;
+			_hoverMouse = false;
+		}
+
+		if (event.type == Common::EVENT_MOUSEMOVE) {
+			if (_canmove && _mousePressed) {
+				x += g_engine->_mouse->_rel.x;
+				y += g_engine->_mouse->_rel.y;
+				return BUAC_GRABBED;
+			}
+		} else if (event.type == Common::EVENT_LBUTTONDOWN || event.type == Common::EVENT_RBUTTONDOWN) {
+			// The g_engine->_mouse button pressed, then released, comprises of a click action
+			if (dim.contains(g_engine->_mouse->_button.x, g_engine->_mouse->_button.y))
+				_mousePressed = true;
+		} else if ((event.type == Common::EVENT_LBUTTONUP || event.type == Common::EVENT_RBUTTONUP) && _mousePressed) {
+			reset();
+			if (dim.contains(g_engine->_mouse->_button.x, g_engine->_mouse->_button.y)) {
+				_mousePressed = false;
+				if (event.type == Common::EVENT_LBUTTONUP) {
+					g_engine->_musicManager->playEffect(_seClick, 0);
+					return BUAC_LCLICK;
+				} else if (event.type == Common::EVENT_RBUTTONUP)
+					return BUAC_RCLICK;
+			}
+		} else if (_hotkey.handleEvents(event)) {
+			g_engine->_musicManager->playEffect(_seClick, 0);
+			return BUAC_LCLICK;
+		}
+	}
+
+	return BUAC_IGNORE;
+}
+
+void Button::setUI(Rect *parent) {
+	Element::setUI(parent);
+
+	_tooltip.setUI(this);
+	_caption.setUI(this);
+}
+
+} // End of namespace Crab