Aegisub/src/visual_feature.h

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// Copyright (c) 2007, Rodrigo Braz Monteiro
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of the Aegisub Group nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// Aegisub Project http://www.aegisub.org/
/// @file visual_feature->h
/// @see visual_feature->cpp
/// @ingroup visual_ts
///
#pragma once
#include "vector2d.h"
#include <boost/intrusive/list_hook.hpp>
class OpenGLWrapper;
class AssDialogue;
/// VisualDraggableFeature display types
enum DraggableFeatureType {
DRAG_NONE,
DRAG_BIG_SQUARE,
DRAG_BIG_CIRCLE,
DRAG_BIG_TRIANGLE,
DRAG_SMALL_SQUARE,
DRAG_SMALL_CIRCLE
};
/// @class VisualDraggableFeature
/// @brief Onscreen control used by many visual tools
///
/// By itself this class doesn't do much. It mostly just draws itself at a
/// specified position and performs hit-testing.
class VisualDraggableFeature : public boost::intrusive::make_list_base_hook<boost::intrusive::link_mode<boost::intrusive::auto_unlink>>::type {
Vector2D start; ///< position before the last drag operation began
public:
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DraggableFeatureType type = DRAG_NONE; ///< Shape of feature
Vector2D pos; ///< Position of this feature
int layer = 0; ///< Layer; Higher = above
AssDialogue* line = nullptr; ///< The dialogue line this feature is for; may be nullptr
/// @brief Is the given point over this feature?
/// @param mouse_pos Position of the mouse
bool IsMouseOver(Vector2D mouse_pos) const;
/// @brief Draw this feature
/// @param gl OpenGLWrapper to use
void Draw(OpenGLWrapper const& gl) const;
/// Start a drag
void StartDrag();
/// Update the position of the feature during a drag
/// @param d New position of the feature
/// @param single_axis Only apply the larger of the two changes to the position
void UpdateDrag(Vector2D d, bool single_axis);
/// Has this feature actually moved since a drag was last started?
bool HasMoved() const;
};