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engines/stark/ui/dialogbox.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/>.
+ *
+ */
+
+#ifndef STARK_UI_DIALOG_BOX_H
+#define STARK_UI_DIALOG_BOX_H
+
+#include "engines/stark/stark.h"
+#include "engines/stark/ui/window.h"
+#include "engines/stark/gfx/color.h"
+
+#include "common/keyboard.h"
+#include "common/scummsys.h"
+
+namespace Stark {
+
+namespace Gfx {
+class SurfaceRenderer;
+class Bitmap;
+}
+
+typedef Common::Functor0<void> ConfirmCallback;
+
+class VisualText;
+
+/**
+ * A confirmation dialog with two buttons
+ *
+ * The cancel button closes the dialog without action.
+ * The confirm button executes a callback.
+ */
+class DialogBox : public Window {
+public:
+	DialogBox(StarkEngine *vm, Gfx::Driver *gfx, Cursor *cursor);
+	~DialogBox() override;
+
+	/** Make the dialog visible with the specified message */
+	void open(const Common::String &message, ConfirmCallback *confirmCallback,
+	          const Common::String &confirmLabel, const Common::String &cancelLabel);
+
+	/** Hide the dialog performing no action */
+	void close();
+
+	/** Called when the screen resolution changes */
+	void onScreenChanged();
+
+	/** Called when a keyboard key is pressed and the dialog is active */
+	void onKeyPress(const Common::CustomEventType customType);
+
+protected:
+	void onRender() override;
+	void onClick(const Common::Point &pos) override;
+
+private:
+	Gfx::Bitmap *loadBackground(Gfx::Driver *gfx);
+	static void drawBevel(Graphics::Surface *surface, const Common::Rect &rect);
+	static Common::Rect centerRect(const Common::Rect &container, const Common::Rect &size);
+
+	void freeForeground();
+	void recomputeLayout();
+
+	StarkEngine *_vm;
+
+	Gfx::SurfaceRenderer *_surfaceRenderer;
+	Gfx::Bitmap *_background;
+	Gfx::Bitmap *_foreground;
+
+	VisualText *_messageVisual;
+	VisualText *_confirmLabelVisual;
+	VisualText *_cancelLabelVisual;
+
+	Common::Rect _confirmButtonRect;
+	Common::Rect _cancelButtonRect;
+	Common::Rect _messageRect;
+
+	const Gfx::Color _textColor = Gfx::Color(0xFF, 0xFF, 0xFF);
+	const Gfx::Color _backgroundColor = Gfx::Color(26, 28, 57);
+
+	ConfirmCallback *_confirmCallback;
+};
+
+} // End of namespace Stark
+
+#endif // STARK_UI_DIALOG_BOX_H