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metaforce/specter/lib/ScrollView.cpp

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#include "specter/ScrollView.hpp"
#include <algorithm>
#include "specter/Button.hpp"
#include "specter/IViewManager.hpp"
#include "specter/RootView.hpp"
#include "specter/ViewResources.hpp"
#include <boo/graphicsdev/IGraphicsCommandQueue.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()) {
commitResources(res, [&](boo::IGraphicsDataFactory::Context& ctx) -> bool {
buildResources(ctx, res);
m_vertsBinding.init(ctx, res, 4, m_viewVertBlockBuf);
return true;
});
if (style == Style::SideButtons) {
m_sideButtons[0].m_view = std::make_unique<Button>(res, *this, &m_sideButtonBind, "<");
m_sideButtons[1].m_view = std::make_unique<Button>(res, *this, &m_sideButtonBind, ">");
}
}
ScrollView::SideButtonBinding::SideButtonBinding(ScrollView& sv, IViewManager& vm)
: m_sv(sv), m_leftName(vm.translate<locale::scroll_left>()), m_rightName(vm.translate<locale::scroll_right>()) {}
std::string_view ScrollView::SideButtonBinding::name(const Control* control) const {
return (control == reinterpret_cast<Control*>(m_sv.m_sideButtons[0].m_view.get())) ? m_leftName.c_str()
: m_rightName.c_str();
}
void ScrollView::SideButtonBinding::down(const Button* button, [[maybe_unused]] const boo::SWindowCoord& coord) {
if (button == m_sv.m_sideButtons[0].m_view.get()) {
m_sv.m_sideButtonState = SideButtonState::ScrollRight;
} else {
m_sv.m_sideButtonState = SideButtonState::ScrollLeft;
}
}
void ScrollView::SideButtonBinding::up([[maybe_unused]] const Button* button,
[[maybe_unused]] const boo::SWindowCoord& coord) {
m_sv.m_sideButtonState = SideButtonState::None;
}
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<decltype(m_verts)>(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->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);
}
}
}
} // namespace specter
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