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/**
bespoke synth, a software modular synthesizer
Copyright (C) 2021 Ryan Challinor (contact: awwbees@gmail.com)
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/>.
**/
/*
==============================================================================
CanvasScrollbar.cpp
Created: 22 Mar 2021 12:19:47am
Author: Ryan Challinor
==============================================================================
*/
#include "CanvasScrollbar.h"
#include "Canvas.h"
#include "ModularSynth.h"
CanvasScrollbar::CanvasScrollbar(Canvas* canvas, std::string name, Style style)
: mStyle(style)
, mCanvas(canvas)
{
SetName(name.c_str());
SetParent(canvas->GetModuleParent());
}
void CanvasScrollbar::Render()
{
ofRectangle canvasRect = mCanvas->GetRect(true);
if (mStyle == Style::kHorizontal)
{
SetPosition(canvasRect.x, canvasRect.getMaxY());
SetDimensions(canvasRect.width, 10);
}
if (mStyle == Style::kVertical)
{
SetPosition(canvasRect.getMaxX(), canvasRect.y);
SetDimensions(10, canvasRect.height);
}
if (mAutoHide && GetBarStart() == 0)
{
if (mStyle == Style::kHorizontal && GetBarEnd() == mWidth)
return;
if (mStyle == Style::kVertical && GetBarEnd() == mHeight)
return;
}
ofPushMatrix();
ofTranslate(mX, mY);
ofPushStyle();
ofSetLineWidth(.5f);
float w, h;
GetDimensions(w, h);
ofFill();
ofRect(0, 0, mWidth, mHeight);
ofSetColor(255, 255, 255);
if (mStyle == Style::kHorizontal)
ofRect(GetBarStart(), 0, GetBarEnd() - GetBarStart(), mHeight);
if (mStyle == Style::kVertical)
ofRect(0, GetBarStart(), mWidth, GetBarEnd() - GetBarStart());
ofPopStyle();
ofPopMatrix();
}
float CanvasScrollbar::GetBarStart() const
{
if (mStyle == Style::kHorizontal)
return mCanvas->mViewStart / mCanvas->GetLength() * mWidth;
if (mStyle == Style::kVertical)
return ofMap(mCanvas->GetRowOffset(), 0, mCanvas->GetNumRows(), 0, mHeight);
return 0;
}
float CanvasScrollbar::GetBarEnd() const
{
if (mStyle == Style::kHorizontal)
return mCanvas->mViewEnd / mCanvas->GetLength() * mWidth;
if (mStyle == Style::kVertical)
return ofMap(mCanvas->GetRowOffset() + mCanvas->GetNumVisibleRows(), 0, mCanvas->GetNumRows(), 0, mHeight);
return 1;
}
void CanvasScrollbar::OnClicked(float x, float y, bool right)
{
mClickMousePos.set(TheSynth->GetRawMouseX(), TheSynth->GetRawMouseY());
mDragOffset.set(0, 0);
mClick = true;
if (mStyle == Style::kHorizontal)
mScrollBarOffset = x - GetBarStart();
if (mStyle == Style::kVertical)
mScrollBarOffset = y - GetBarStart();
}
void CanvasScrollbar::MouseReleased()
{
mClick = false;
}
bool CanvasScrollbar::MouseMoved(float x, float y)
{
CheckHover(x, y);
if (mClick)
{
mDragOffset = (ofVec2f(TheSynth->GetRawMouseX(), TheSynth->GetRawMouseY()) - mClickMousePos) / gDrawScale;
if (mStyle == Style::kHorizontal)
{
float viewLength = mCanvas->mViewEnd - mCanvas->mViewStart;
mCanvas->mViewStart = ofClamp((x - mScrollBarOffset) / mWidth * mCanvas->GetLength(), 0, mCanvas->GetLength() - viewLength);
mCanvas->mViewEnd = mCanvas->mViewStart + viewLength;
}
if (mStyle == Style::kVertical)
mCanvas->SetRowOffset(ofClamp(int(ofMap(y - mScrollBarOffset, 0, mHeight, 0, mCanvas->GetNumRows()) + .5f), 0, mCanvas->GetNumRows() - mCanvas->GetNumVisibleRows()));
}
return false;
}
bool CanvasScrollbar::MouseScrolled(float x, float y, float scrollX, float scrollY, bool isSmoothScroll, bool isInvertedScroll)
{
return false;
}
void CanvasScrollbar::SaveState(FileStreamOut& out)
{
}
void CanvasScrollbar::LoadState(FileStreamIn& in, bool shouldSetValue)
{
}
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