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Working scroll wheel functionality

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This commit is contained in:
Jack Andersen
2015-12-29 12:58:09 -10:00
parent 725990da45
commit 4866ac6d4c
5 changed files with 169 additions and 51 deletions
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62
specter/lib/ScrollView.cpp
View File

@@ -2,6 +2,7 @@
namespace Specter
{
#define MAX_SCROLL_SPEED 100
ScrollView::ScrollView(ViewResources& res, View& parentView)
: View(res, parentView)
@@ -11,9 +12,60 @@ ScrollView::ScrollView(ViewResources& res, View& parentView)
void ScrollView::scroll(const boo::SWindowCoord& coord, const boo::SScrollDelta& scroll)
{
m_scroll[0] += scroll.delta[0];
m_scroll[1] += scroll.delta[1];
updateSize();
if (m_contentView)
{
double mult = 10.0;
if (scroll.isFine)
mult = 1.0;
m_targetScroll[0] += scroll.delta[0] * mult;
m_targetScroll[1] += scroll.delta[1] * mult;
m_targetScroll[1] = std::min(m_targetScroll[1], 0);
if (scroll.isFine)
{
m_scroll[0] = m_targetScroll[0];
m_scroll[1] = m_targetScroll[1];
updateSize();
}
}
else
{
m_scroll[0] = 0;
m_scroll[1] = 0;
m_targetScroll[0] = 0;
m_targetScroll[1] = 0;
updateSize();
}
}
void ScrollView::think()
{
bool update = false;
int xSpeed = std::max(1, std::min(abs(m_targetScroll[0] - m_scroll[0]) / 10, 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]) / 10, 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)
@@ -23,7 +75,9 @@ void ScrollView::resized(const boo::SWindowRect& root, const boo::SWindowRect& s
{
boo::SWindowRect cRect = sub;
cRect.location[0] += m_scroll[0];
cRect.location[1] += sub.size[1] - m_contentView->nominalHeight() + m_scroll[1];
cRect.location[1] += sub.size[1] - m_contentView->nominalHeight() - m_scroll[1];
cRect.size[0] = m_contentView->nominalWidth();
cRect.size[1] = m_contentView->nominalHeight();
m_contentView->resized(root, cRect, sub);
}
}