/// <summary>
/// Performs layout of sub controls, such as element host, scroll bars etc..
/// </summary>
protected virtual void LayoutSubControls()
{
int vw = m_VScrollBar.Width;
int hh = m_HScrollBar.Height;
m_VScrollBar.SetBounds(Width - vw - Padding.Right, Padding.Top, vw, Height - hh - Padding.Vertical);
m_HScrollBar.SetBounds(Padding.Left, Height - hh - Padding.Bottom, Width - vw - Padding.Horizontal, hh);
var newWidth = m_VScrollBar.Left - 1 - Padding.Left;
var newHeight = m_HScrollBar.Top - 1 - Padding.Top;
var needRebuild = newHeight != m_CellView.Height;
m_CellView.SetBounds(Padding.Left, Padding.Top, newWidth, newHeight);
if (needRebuild)
{
rebuildAllCells();
}
}
// OnFormLoad()
/// <summary>
/// Control is resizing. As it turns out, it's easier to code this manually than
/// to fight with anchors, docking and adding Panel controls until it all works.
/// </summary>
/// <param name="sender">
/// Event sender
/// </param>
/// <param name="e">
/// Event parameters
/// </param>
private void OnResize(object sender, EventArgs e)
{
// first determine the minimum width
int MinWidth = lblBrightness.Width;
MinWidth += lblSaturation.Width;
MinWidth += SELECTED_COLOR_WIDTH;
int MinScrollBar = SystemInformation.HorizontalScrollBarArrowWidth * 2 +
SystemInformation.HorizontalScrollBarThumbWidth;
MinWidth += MinScrollBar * 2;
Rectangle rcArea = ClientRectangle;
int MinHeight = rcArea.Height;
bool bChange = false;
if (MinWidth > rcArea.Width)
{
bChange = true;
}
else
{
MinWidth = rcArea.Width;
}
if (MinHeight < SELECTED_COLOR_HEIGHT)
{
MinHeight = SELECTED_COLOR_HEIGHT;
bChange = true;
}
if (bChange)
{
// at this point resizing will shrink over the control area because the control
// cannot get any smaller
rcArea = new Rectangle(
ClientRectangle.Left,
ClientRectangle.Top,
MinWidth,
MinHeight);
}
// next calculate the selected color area
m_rcSelColor = new Rectangle(
rcArea.Right - SELECTED_COLOR_WIDTH - 1,
rcArea.Top,
SELECTED_COLOR_WIDTH,
rcArea.Height - 1);
// calculate the height of the hue bar area, which is everything left over after
// the bottom scroll bars are drawn, with a 1 pixel buffer
int HueBarHeight = (rcArea.Bottom - rcArea.Top) -
SystemInformation.HorizontalScrollBarHeight - 1;
if (HueBarHeight < 0)
{
HueBarHeight = 20; // control is not going to fit...
}
// the left and right buttons. we shrink them a bit vertically so that the arrows
// indicating the selected hue stand out a bit more
btnLeft.SetBounds(
rcArea.Left,
rcArea.Top + HUE_SELECT_ARROW_HEIGHT,
ARROW_BUTTON_WIDTH,
HueBarHeight - (2 * HUE_SELECT_ARROW_HEIGHT) + 1);
btnRight.SetBounds(
m_rcSelColor.Left - ARROW_BUTTON_WIDTH - 1,
rcArea.Top + HUE_SELECT_ARROW_HEIGHT,
ARROW_BUTTON_WIDTH,
HueBarHeight - (2 * HUE_SELECT_ARROW_HEIGHT) + 1);
// and the hue bar area
m_rcHueBar = new Rectangle(
btnLeft.Right,
rcArea.Top,
btnRight.Left - btnLeft.Right,
HueBarHeight);
// important calculation for matching a screen pixel to a hue amount
m_HuePixelStep = 360.0f / m_rcHueBar.Width;
// finally, position the controls
int ScrollWidth = ((m_rcSelColor.Left - rcArea.Left) - lblBrightness.Width - lblSaturation.Width) / 2;
if (ScrollWidth < MinScrollBar)
{
ScrollWidth = MinScrollBar;
}
int BottomHeight = rcArea.Bottom - m_rcHueBar.Bottom;
lblBrightness.SetBounds(
rcArea.Left,
m_rcHueBar.Bottom + 1,
lblBrightness.Width,
BottomHeight,
BoundsSpecified.All);
wndScrollBrightness.SetBounds(
lblBrightness.Right,
m_rcHueBar.Bottom + 1,
ScrollWidth,
BottomHeight,
BoundsSpecified.All);
lblSaturation.SetBounds(
wndScrollBrightness.Right,
m_rcHueBar.Bottom + 1,
lblSaturation.Width,
BottomHeight,
BoundsSpecified.All);
wndScrollSaturation.SetBounds(
lblSaturation.Right,
m_rcHueBar.Bottom + 1,
ScrollWidth,
BottomHeight,
BoundsSpecified.All);
}