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engines/crab/ui/ProgressBar.h

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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
+ *
+ */
+
+#ifndef CRAB_PROGRESSBAR_H
+#define CRAB_PROGRESSBAR_H
+
+#include "crab/timer.h"
+#include "crab/ui/ClipButton.h"
+
+namespace Crab {
+
+namespace pyrodactyl {
+namespace ui {
+class ProgressBar : public ClipButton {
+	// Whenever the progress bar value is changed, we display a glowing effect
+	Timer _timer;
+
+	// The total time for which the change effect must be shown
+	uint32 _notifyRate;
+
+	// Are we currently displaying the effect?
+	bool _changed;
+
+	// The effect also depends on if the change was positive or negative, so store the previous value
+	int _old;
+
+	// If we are drawing an animation, we need to smoothly transition from old->value
+	// This stores the current progress
+	int _cur;
+
+	// The type of effect being drawn
+	enum {
+		NONE,
+		INCREASE,
+		DECREASE
+	} _type;
+
+	// We reuse the button images for the 2 types of effect
+	ImageKey _inc, _dec;
+
+	// Where to draw the effect
+	Vector2i _offset;
+
+	// The caption text changes depending on the value of the progress bar - we store all possible text here
+	struct CaptionText {
+		// The text to be drawn
+		Common::String _text;
+
+		// The above text is drawn only if the progress bar value is greater than this val
+		int _val;
+
+		CaptionText() {
+			_val = 0;
+		}
+
+		CaptionText(rapidxml::xml_node<char> *node) {
+			if (!loadNum(_val, "val", node))
+				_val = 0;
+
+			if (!loadStr(_text, "text", node))
+				_text = "";
+		}
+	};
+
+	Common::Array<CaptionText> _ct;
+
+public:
+	ProgressBar() {
+		_old = 0;
+		_cur = 0;
+		_inc = 0;
+		_dec = 0;
+		_notifyRate = 5;
+		reset();
+	}
+	~ProgressBar() {}
+
+	// Reset the effect
+	void reset() {
+		_changed = false;
+		_type = NONE;
+	}
+	void load(rapidxml::xml_node<char> *node);
+
+	void draw(const int &value, const int &max);
+	void effect(const int &value, const int &prev);
+};
+} // End of namespace ui
+} // End of namespace pyrodactyl
+
+} // End of namespace Crab
+
+#endif // CRAB_PROGRESSBAR_H