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metaforce/specter/lib/ScrollView.cpp

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#include "Specter/ScrollView.hpp"
#include "Specter/ViewResources.hpp"
#include "Specter/RootView.hpp"
#include "Specter/Button.hpp"
namespace Specter
{
#define MAX_SCROLL_SPEED 100
ScrollView::ScrollView(ViewResources& res, View& parentView, Style style)
: View(res, parentView), m_style(style), m_sideButtonBind(*this, rootView().viewManager())
{
m_vertsBinding.initSolid(res, 4, m_viewVertBlockBuf);
commitResources(res);
if (style == Style::SideButtons)
{
m_sideButtons[0].m_view.reset(new Button(res, *this, &m_sideButtonBind, "<"));
m_sideButtons[1].m_view.reset(new Button(res, *this, &m_sideButtonBind, ">"));
}
}
bool ScrollView::_scroll(const boo::SScrollDelta& scroll)
{
if (m_contentView.m_view)
{
float ratioX = subRect().size[0] / float(m_contentView.m_view->nominalWidth());
float ratioY = subRect().size[1] / float(m_contentView.m_view->nominalHeight());
float pf = rootView().viewRes().pixelFactor();
double mult = 20.0 * pf;
if (scroll.isFine)
mult = 1.0 * pf;
bool ret = false;
if (ratioX >= 1.f)
{
m_scroll[0] = 0;
m_targetScroll[0] = 0;
m_drawSideButtons = false;
ret = true;
}
else
{
m_drawSideButtons = true;
m_targetScroll[0] += scroll.delta[0] * mult;
m_targetScroll[0] = std::min(m_targetScroll[0], 0);
int scrollWidth = m_contentView.m_view->nominalWidth() - scrollAreaWidth();
m_targetScroll[0] = std::max(m_targetScroll[0], -scrollWidth);
}
if (ratioY >= 1.f)
{
m_scroll[1] = 0;
m_targetScroll[1] = 0;
ret = true;
}
else
{
m_targetScroll[1] -= scroll.delta[1] * mult;
m_targetScroll[1] = std::max(m_targetScroll[1], 0);
int scrollHeight = m_contentView.m_view->nominalHeight() - subRect().size[1];
m_targetScroll[1] = std::min(m_targetScroll[1], scrollHeight);
}
if (scroll.isFine)
{
m_scroll[0] = m_targetScroll[0];
m_scroll[1] = m_targetScroll[1];
ret = true;
}
return ret;
}
else
{
m_scroll[0] = 0;
m_scroll[1] = 0;
m_targetScroll[0] = 0;
m_targetScroll[1] = 0;
m_drawSideButtons = false;
return true;
}
return false;
}
int ScrollView::scrollAreaWidth() const
{
int ret = subRect().size[0];
if (m_style == Style::SideButtons && m_drawSideButtons)
{
ret -= m_sideButtons[0].m_view->nominalWidth();
ret -= m_sideButtons[1].m_view->nominalWidth();
}
return std::max(0, ret);
}
void ScrollView::mouseDown(const boo::SWindowCoord& coord, boo::EMouseButton button, boo::EModifierKey mod)
{
if (m_style == Style::SideButtons && m_drawSideButtons)
{
if (m_sideButtons[0].mouseDown(coord, button, mod) ||
m_sideButtons[1].mouseDown(coord, button, mod))
return;
}
m_contentView.mouseDown(coord, button, mod);
}
void ScrollView::mouseUp(const boo::SWindowCoord& coord, boo::EMouseButton button, boo::EModifierKey mod)
{
if (m_style == Style::SideButtons)
{
m_sideButtons[0].mouseUp(coord, button, mod);
m_sideButtons[1].mouseUp(coord, button, mod);
}
m_contentView.mouseUp(coord, button, mod);
}
void ScrollView::mouseMove(const boo::SWindowCoord& coord)
{
if (m_style == Style::SideButtons && m_drawSideButtons)
{
m_sideButtons[0].mouseMove(coord);
m_sideButtons[1].mouseMove(coord);
}
m_contentView.mouseMove(coord);
}
void ScrollView::mouseEnter(const boo::SWindowCoord& coord)
{
if (m_style == Style::SideButtons && m_drawSideButtons)
{
m_sideButtons[0].mouseEnter(coord);
m_sideButtons[1].mouseEnter(coord);
}
m_contentView.mouseEnter(coord);
}
void ScrollView::mouseLeave(const boo::SWindowCoord& coord)
{
if (m_style == Style::SideButtons)
{
m_sideButtons[0].mouseLeave(coord);
m_sideButtons[1].mouseLeave(coord);
}
m_contentView.mouseLeave(coord);
}
void ScrollView::scroll(const boo::SWindowCoord& coord, const boo::SScrollDelta& scroll)
{
if (!scroll.isAccelerated)
{
boo::SScrollDelta newScroll = scroll;
m_consecutiveScroll[m_consecutiveIdx][0] += scroll.delta[0];
m_consecutiveScroll[m_consecutiveIdx][1] += scroll.delta[1];
newScroll.delta[0] = 0;
newScroll.delta[1] = 0;
for (size_t i=0 ; i<16 ; ++i)
{
newScroll.delta[0] += m_consecutiveScroll[i][0];
newScroll.delta[1] += m_consecutiveScroll[i][1];
}
if (_scroll(newScroll))
updateSize();
return;
}
if (_scroll(scroll))
updateSize();
}
void ScrollView::setMultiplyColor(const Zeus::CColor& color)
{
View::setMultiplyColor(color);
if (m_style == Style::SideButtons)
{
m_sideButtons[0].m_view->setMultiplyColor(color);
m_sideButtons[1].m_view->setMultiplyColor(color);
}
if (m_contentView.m_view)
m_contentView.m_view->setMultiplyColor(color);
}
void ScrollView::think()
{
m_consecutiveIdx = (m_consecutiveIdx+1) % 16;
m_consecutiveScroll[m_consecutiveIdx][0] = 0.0;
m_consecutiveScroll[m_consecutiveIdx][1] = 0.0;
if (m_sideButtonState != SideButtonState::None)
{
if (m_sideButtonState == SideButtonState::ScrollLeft)
m_targetScroll[0] -= 3;
else if (m_sideButtonState == SideButtonState::ScrollRight)
m_targetScroll[0] += 3;
m_targetScroll[0] = std::min(m_targetScroll[0], 0);
int scrollWidth = m_contentView.m_view->nominalWidth() - scrollAreaWidth();
m_targetScroll[0] = std::max(m_targetScroll[0], -scrollWidth);
}
bool update = false;
float pf = rootView().viewRes().pixelFactor();
int xSpeed = std::max(1, std::min(abs(m_targetScroll[0] - m_scroll[0]) / int(5*pf), int(pf*MAX_SCROLL_SPEED)));
if (m_scroll[0] < m_targetScroll[0])
{
m_scroll[0] += xSpeed;
update = true;
}
else if (m_scroll[0] > m_targetScroll[0])
{
m_scroll[0] -= xSpeed;
update = true;
}
int ySpeed = std::max(1, std::min(abs(m_targetScroll[1] - m_scroll[1]) / int(5*pf), int(pf*MAX_SCROLL_SPEED)));
if (m_scroll[1] < m_targetScroll[1])
{
m_scroll[1] += ySpeed;
update = true;
}
else if (m_scroll[1] > m_targetScroll[1])
{
m_scroll[1] -= ySpeed;
update = true;
}
if (update)
updateSize();
}
void ScrollView::resized(const boo::SWindowRect& root, const boo::SWindowRect& sub)
{
View::resized(root, sub);
_scroll({});
if (m_contentView.m_view)
{
boo::SWindowRect cRect = sub;
cRect.location[0] += m_scroll[0];
cRect.location[1] += sub.size[1] - m_contentView.m_view->nominalHeight() + m_scroll[1];
cRect.size[0] = m_contentView.m_view->nominalWidth();
cRect.size[1] = m_contentView.m_view->nominalHeight();
m_contentView.m_scissorRect = sub;
if (m_style == Style::SideButtons && m_drawSideButtons)
{
int width0 = m_sideButtons[0].m_view->nominalWidth() + 2;
int width1 = m_sideButtons[1].m_view->nominalWidth();
cRect.location[0] += width0;
cRect.size[0] -= (width0 + width1);
m_contentView.m_scissorRect.location[0] += width0;
m_contentView.m_scissorRect.size[0] -= (width0 + width1);
}
m_contentView.m_view->resized(root, cRect, m_contentView.m_scissorRect);
if (m_style == Style::ThinIndicator)
{
float ratio = sub.size[1] / float(cRect.size[1]);
m_drawInd = ratio < 1.f;
if (m_drawInd)
{
float pf = rootView().viewRes().pixelFactor();
int barHeight = sub.size[1] * ratio;
int scrollHeight = sub.size[1] - barHeight;
float prog = m_scroll[1] / float(cRect.size[1] - sub.size[1]);
int x = sub.size[0];
int y = sub.size[1] - scrollHeight * prog;
m_verts[0].m_pos.assign(x, y, 0);
m_verts[1].m_pos.assign(x, y-barHeight, 0);
m_verts[2].m_pos.assign(x+2*pf, y, 0);
m_verts[3].m_pos.assign(x+2*pf, y-barHeight, 0);
const Zeus::CColor& color = rootView().themeData().scrollIndicator();
for (int i=0 ; i<4 ; ++i)
m_verts[i].m_color = color;
m_vertsBinding.load(m_verts, sizeof(m_verts));
}
}
else if (m_style == Style::SideButtons && m_drawSideButtons)
{
boo::SWindowRect bRect = sub;
bRect.size[0] = m_sideButtons[0].m_view->nominalWidth();
bRect.size[1] = m_sideButtons[0].m_view->nominalHeight();
m_sideButtons[0].m_view->resized(root, bRect);
bRect.size[0] = m_sideButtons[1].m_view->nominalWidth();
bRect.size[1] = m_sideButtons[1].m_view->nominalHeight();
bRect.location[0] += sub.size[0] - bRect.size[0];
m_sideButtons[1].m_view->resized(root, bRect);
}
}
}
void ScrollView::draw(boo::IGraphicsCommandQueue* gfxQ)
{
if (m_contentView.m_view)
{
m_contentView.m_view->draw(gfxQ);
if (m_style == Style::ThinIndicator && m_drawInd)
{
gfxQ->setShaderDataBinding(m_vertsBinding);
gfxQ->setDrawPrimitive(boo::Primitive::TriStrips);
gfxQ->draw(0, 4);
}
else if (m_style == Style::SideButtons && m_drawSideButtons)
{
m_sideButtons[0].m_view->draw(gfxQ);
m_sideButtons[1].m_view->draw(gfxQ);
}
}
}
}
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