Aegisub/src/visual_feature.cpp

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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->cpp
/// @brief Feature on video the user can interact with using mouse
/// @ingroup visual_ts
///
#include "gl_wrap.h"
#include "visual_feature.h"
bool VisualDraggableFeature::IsMouseOver(Vector2D mouse_pos) const {
if (!pos) return false;
Vector2D delta = mouse_pos - pos;
switch (type) {
case DRAG_BIG_SQUARE:
return fabs(delta.X()) < 6 && fabs(delta.Y()) < 6;
case DRAG_BIG_CIRCLE:
return delta.SquareLen() < 36;
case DRAG_BIG_TRIANGLE: {
if (delta.Y() < -10 || delta.Y() > 6) return false;
float dy = delta.Y() - 6;
return 16 * delta.X() + 9 * dy < 0 && 16 * delta.X() - 9 * dy > 0;
}
case DRAG_SMALL_SQUARE:
return fabs(delta.X()) < 3 && fabs(delta.Y()) < 3;
case DRAG_SMALL_CIRCLE:
return delta.SquareLen() < 9;
default:
return false;
}
}
void VisualDraggableFeature::Draw(OpenGLWrapper const& gl) const {
if (!pos) return;
switch (type) {
case DRAG_BIG_SQUARE:
gl.DrawRectangle(pos - 6, pos + 6);
gl.DrawLine(pos - Vector2D(0, 12), pos + Vector2D(0, 12));
gl.DrawLine(pos - Vector2D(12, 0), pos + Vector2D(12, 0));
break;
case DRAG_BIG_CIRCLE:
gl.DrawCircle(pos, 6);
gl.DrawLine(pos - Vector2D(0, 12), pos + Vector2D(0, 12));
gl.DrawLine(pos - Vector2D(12, 0), pos + Vector2D(12, 0));
break;
case DRAG_BIG_TRIANGLE:
gl.DrawTriangle(pos - Vector2D(9, 6), pos + Vector2D(9, -6), pos + Vector2D(0, 10));
gl.DrawLine(pos, pos + Vector2D(0, -16));
gl.DrawLine(pos, pos + Vector2D(-14, 8));
gl.DrawLine(pos, pos + Vector2D(14, 8));
break;
case DRAG_SMALL_SQUARE:
gl.DrawRectangle(pos - 3, pos + 3);
break;
case DRAG_SMALL_CIRCLE:
gl.DrawCircle(pos, 3);
break;
default:
break;
}
}
void VisualDraggableFeature::StartDrag() {
start = pos;
}
void VisualDraggableFeature::UpdateDrag(Vector2D d, bool single_axis) {
if (single_axis)
d = d.SingleAxis();
pos = start + d;
}
bool VisualDraggableFeature::HasMoved() const {
return pos != start;
}