void ScrollBar::onPress(fw::Mouse::Button button,fm::vec2 p)
{
if (button == fw::Mouse::Left)
{
if (!inDragArea(p))
{
fm::vec2 s = getSize();
fm::vec2 sprS = s * getScrollSize();
if (getScrollDirection() == ScrollHorizontal)
{
float inp = p.x - getPosition().x - sprS.w/2;
setScrollState(inp / (s.w - sprS.w));
}
else
{
float inp = p.y - getPosition().y - sprS.h/2;
setScrollState(1 - inp / (s.h - sprS.h));
}
setupDraws();
}
m_grabState = getScrollState();
m_grabbed = true;
m_grabp = p;
}
}
void ScrollBar::onMouseMove(fm::vec2 p,fm::vec2 /* prevP */ )
{
if (m_grabbed)
{
fm::vec2 s = getSize();
float state = 0;
if (getScrollDirection() == ScrollHorizontal)
{
state = m_grabState - (m_grabp.x - p.x) / (s.w - s.w * getScrollSize());
}
else
{
state = m_grabState - (p.y - m_grabp.y) / (s.h - s.h * getScrollSize());
}
setScrollState(state);
setupDraws();
}
}
void ScrollBar::setupDraws()
{
fm::vec3 p = getPosition();
fm::vec2 s = getSize();
float scrollSize = getScrollSize();
fm::vec2 sprS = s * scrollSize;
float scrollState = getScrollState();
fm::vec2 pts[12];
fm::vec2 tpt[] = {fm::vec2(0,0),fm::vec2(1,0),fm::vec2(1,1),fm::vec2(0,0),fm::vec2(1,1),fm::vec2(0,1)};
auto mixF = [&](float a,float b,float s,bool fst) -> float {
if (a > b)
return fst ? a : b;
return a * (1-s) + b * s;
};
if (getScrollDirection() == ScrollHorizontal)
{
m_handle.setPosition(p + fm::vec2i((s.w-sprS.w)*scrollState,0));
m_handle.setSize(fm::vec2i(sprS.w,s.h));
C(6)
pts[i+0] = fm::vec2(mixF(p.x + sprS.w/2,m_handle.getPosition().x,tpt[i].x,false),
p.y + s.h/2 - 2 + 4 * tpt[i].y);
C(6)
pts[i+6] = fm::vec2(mixF(m_handle.getPosition().x + m_handle.getSize().w, p.x + s.w - sprS.w/2, tpt[i].x,true),
p.y + s.h/2 - 2 + 4 * tpt[i].y);
}
else
{
m_handle.setPosition(p + fm::vec2i(0,(s.h-sprS.h)*(1 - scrollState)));
m_handle.setSize(fm::vec2(s.w,sprS.h));
C(6)
pts[i+0] = fm::vec2(p.x + s.w/2 - 2 + 4 * tpt[i].x,
mixF(p.y + sprS.h/2,m_handle.getPosition().y,tpt[i].y,false));
C(6)
pts[i+6] = fm::vec2(p.x + s.w/2 - 2 + 4 * tpt[i].x,
mixF(m_handle.getPosition().y + m_handle.getSize().h, p.y + s.h - sprS.h/2, tpt[i].y,true));
}
m_railDraw.positions = pts;
}
///////////////////////////////////////////////////////////
//
// Calculate the rectancle to use to draw the image
//
///////////////////////////////////////////////////////////
void view::updateImageRect(imbxInt32 centerPointX, imbxInt32 centerPointY)
{
imbxInt32 tempCenterPointX = 0;
imbxInt32 tempCenterPointY = 0;
getCenterPoint(&tempCenterPointX, &tempCenterPointY);
if(centerPointX < 0) centerPointX = tempCenterPointX;
if(centerPointY < 0) centerPointY = tempCenterPointY;
imbxInt32 leftPosition, topPosition, rightPosition, bottomPosition;
leftPosition=
topPosition=
rightPosition=
bottomPosition = 0;
// Get the window's size
///////////////////////////////////////////////////////////
imbxUint32 windowSizeX = 0;
imbxUint32 windowSizeY = 0;
getWindowSize(&windowSizeX, &windowSizeY);
// Get the scroll size
///////////////////////////////////////////////////////////
imbxUint32 scrollSizeX = 0;
imbxUint32 scrollSizeY = 0;
getScrollSize(&scrollSizeX, &scrollSizeY);
// Get the scroll position
///////////////////////////////////////////////////////////
imbxInt32 scrollPosX = 0;
imbxInt32 scrollPosY = 0;
getScrollPosition(&scrollPosX, &scrollPosY);
// For now, the new scroll size and position are the same
// as the old ones
///////////////////////////////////////////////////////////
imbxUint32 newScrollSizeX=scrollSizeX;
imbxUint32 newScrollSizeY=scrollSizeY;
if(m_originalImage != 0)
{
imbxUint32 imageSizeX(0), imageSizeY(0);
m_originalImage->getSize(&imageSizeX, &imageSizeY);
// Retrieve the screen's resolution
///////////////////////////////////////////////////////////
imbxUint32 screenHorzDPI, screenVertDPI;
screenHorzDPI=screenVertDPI=75;
getScreenDPI(&screenHorzDPI, &screenVertDPI);
// Get the image's size (in mms and pixels)
///////////////////////////////////////////////////////////
double imageSizeMmX = 0;
double imageSizeMmY = 0;
m_originalImage->getSizeMm(&imageSizeMmX, &imageSizeMmY);
if(imageSizeMmX == 0)
{
imageSizeMmX = (double)imageSizeX * 25.4 / (double)screenHorzDPI;
}
if(imageSizeMmY == 0)
{
imageSizeMmY = (double)imageSizeY * 25.4 / (double)screenVertDPI;
}
// Calculate the area occupied by the image, in screen's
// pixels
///////////////////////////////////////////////////////////
imbxUint32 displayAreaWidth=(imbxUint32)((double)imageSizeMmX*m_zoom*(double)screenHorzDPI/25.4+0.5);
imbxUint32 displayAreaHeight=(imbxUint32)((double)imageSizeMmY*m_zoom*(double)screenVertDPI/25.4+0.5);
if(displayAreaWidth>windowSizeX)
{
rightPosition = displayAreaWidth;
}
else
{
leftPosition = (windowSizeX-displayAreaWidth)>>1;
rightPosition = leftPosition+displayAreaWidth;
}
if(displayAreaHeight>windowSizeY)
{
bottomPosition = displayAreaHeight;
}
else
{
topPosition = (windowSizeY-displayAreaHeight)>>1;
bottomPosition = topPosition+displayAreaHeight;
}
newScrollSizeX = displayAreaWidth;
newScrollSizeY = displayAreaHeight;
}
