/// <summary>
/// Gets the padding between adjacent content items.
/// </summary>
/// <param name="state">Palette value should be applicable to this state.</param>
/// <returns>Integer value.</returns>
public override int GetContentAdjacentGap(PaletteState state)
{
if (_apply)
{
int ret = _primary.GetContentAdjacentGap(_override ? _state : state);
if (ret == -1)
{
ret = _backup.GetContentAdjacentGap(state);
}
return(ret);
}
else
{
return(_backup.GetContentAdjacentGap(state));
}
}
/// <summary>
/// Gets the padding between adjacent content items.
/// </summary>
/// <param name="state">Palette value should be applicable to this state.</param>
/// <returns>Integer value.</returns>
public virtual int GetContentAdjacentGap(PaletteState state)
{
if (Apply)
{
int ret = _primaryContent.GetContentAdjacentGap(Override ? OverrideState : state);
if (ret == -1)
{
ret = _backupContent.GetContentAdjacentGap(state);
}
return(ret);
}
else
{
return(_backupContent.GetContentAdjacentGap(state));
}
}
/// <summary>
/// Gets the actual padding between adjacent content items.
/// </summary>
/// <param name="state">Palette value should be applicable to this state.</param>
/// <returns>Integer value.</returns>
public int GetContentAdjacentGap(PaletteState state)
{
if (AdjacentGap != -1)
{
return(AdjacentGap);
}
else
{
return(_inherit.GetContentAdjacentGap(state));
}
}
/// <summary>
/// Gets the padding between adjacent content items.
/// </summary>
/// <param name="style">Content style.</param>
/// <param name="state">Palette value should be applicable to this state.</param>
/// <returns>Integer value.</returns>
public override int GetContentAdjacentGap(PaletteContentStyle style, PaletteState state)
{
IPaletteContent inherit = GetInherit(state);
if (inherit != null)
{
return(inherit.GetContentAdjacentGap(state));
}
else
{
return(Target.GetContentAdjacentGap(style, state));
}
}
/// <summary>
/// Gets the padding between adjacent content items.
/// </summary>
/// <param name="state">Palette value should be applicable to this state.</param>
/// <returns>Integer value.</returns>
public override int GetContentAdjacentGap(PaletteState state)
{
return(_inherit.GetContentAdjacentGap(state));
}
/// <summary>
/// Gets the padding between adjacent content items.
/// </summary>
/// <param name="style">Content style.</param>
/// <param name="state">Palette value should be applicable to this state.</param>
/// <returns>Integer value.</returns>
public override int GetContentAdjacentGap(PaletteContentStyle style, PaletteState state)
{
IPaletteContent inherit = GetInherit(state);
return(inherit?.GetContentAdjacentGap(state) ?? Target.GetContentAdjacentGap(style, state));
}
/// <summary>
/// Perform layout calculations on the provided content.
/// </summary>
/// <param name="context">Layout context.</param>
/// <param name="availableRect">Display area available for laying out.</param>
/// <param name="palette">Content palette details.</param>
/// <param name="values">Content values.</param>
/// <param name="orientation">Visual orientation of the content.</param>
/// <param name="state">State associated with rendering.</param>
/// <param name="composition">Should draw on a composition element.</param>
/// <param name="glowing">If composition, should glowing be drawn.</param>
/// <returns>Memento with cached information.</returns>
public override IDisposable LayoutContent(ViewLayoutContext context,
Rectangle availableRect,
IPaletteContent palette,
IContentValues values,
VisualOrientation orientation,
PaletteState state,
bool composition,
bool glowing)
{
Debug.Assert(context != null);
Debug.Assert(palette != null);
Debug.Assert(values != null);
// Validate parameter references
if (context == null) throw new ArgumentNullException("context");
if (palette == null) throw new ArgumentNullException("palette");
Debug.Assert(context.Control != null);
Debug.Assert(!context.Control.IsDisposed);
// Remember the original value, for use later
Rectangle cacheDisplayRect = availableRect;
// Grab the padding for the content
Padding borderPadding = palette.GetContentPadding(state);
// Is the content intended for a vertical drawing orientation?
bool vertical = (orientation == VisualOrientation.Left) ||
(orientation == VisualOrientation.Right);
// If we need to apply in a vertical orientation
if (vertical)
{
// Our algorithm only works by assuming a left to right horizontal
// orientation, so we adjust the display rect to that orientation
// and then at the end adjust the memento produced back to the
// required orientation again. 'AdjustForOrientation'
int temp = availableRect.Width;
availableRect.Width = availableRect.Height;
availableRect.Height = temp;
}
// Apply padding to the rectangle
availableRect.X += borderPadding.Left;
availableRect.Y += borderPadding.Top;
availableRect.Width -= borderPadding.Horizontal;
availableRect.Height -= borderPadding.Vertical;
// If we need to apply in a vertical orientation
if (vertical)
{
// This is the display rect we need to use in 'AdjustForOrientation'
// and cache it for later. The displayRect itself is modified during
// the below process and so cannot be used directly.
int temp = cacheDisplayRect.Width;
cacheDisplayRect.Width = cacheDisplayRect.Height;
cacheDisplayRect.Height = temp;
}
// Track the allocated space in each grid position
Size[,] allocation = new Size[3, 3] { { Size.Empty, Size.Empty, Size.Empty },
{ Size.Empty, Size.Empty, Size.Empty },
{ Size.Empty, Size.Empty, Size.Empty } };
// Create a memento to return to caller
StandardContentMemento memento = new StandardContentMemento();
// Cache the size of a spacing gap
int spacingGap = palette.GetContentAdjacentGap(state);
// Drawing vertical means we can ignore right to left, otherwise get value from control
RightToLeft rtl = (vertical ? RightToLeft.No : context.Control.RightToLeft);
// Allocate space for each required content in turn
AllocateImageSpace(memento, palette, values, state, availableRect, rtl, ref allocation);
AllocateShortTextSpace(context, context.Graphics, memento, palette, values, state, availableRect, rtl, spacingGap, ref allocation, composition, glowing);
AllocateLongTextSpace(context, context.Graphics, memento, palette, values, state, availableRect, rtl, spacingGap, ref allocation, composition, glowing);
// Find the width of the columns and heights of the rows
int[] colWidths = AllocatedColumnWidths(allocation, -1);
int[] rowHeights = AllocatedRowHeights(allocation);
// Add up total allocated for rows and columns
int allocatedWidth = AllocatedTotalWidth(allocation, -1, -1, spacingGap);
int allocatedHeight = AllocatedTotalHeight(allocation);
// Excess width to allocate?
if (allocatedWidth < availableRect.Width)
ApplyExcessSpace(availableRect.Width - allocatedWidth, ref colWidths);
// Excess height to allocate?
if (allocatedHeight < availableRect.Height)
rowHeights[1] += (availableRect.Height - allocatedHeight);
// Find x positions and y positions
int col0 = availableRect.Left;
int col1 = col0 + colWidths[0];
// Do we need to add a spacing gap after the first column?
if (((colWidths[0] > 0) && (colWidths[1] > 0)) ||
((colWidths[0] > 0) && (colWidths[1] == 0) && (colWidths[2] > 0)))
col1 += spacingGap;
int col2 = col1 + colWidths[1];
// Do we need to add a spacing gap after the second column?
if ((colWidths[1] > 0) && (colWidths[2] > 0))
col2 += spacingGap;
int row0 = availableRect.Top;
int row1 = row0 + rowHeights[0];
int row2 = row1 + rowHeights[1];
// Decide on the ordering of the alignment to position
PaletteRelativeAlign aAlign = (rtl == RightToLeft.Yes ? PaletteRelativeAlign.Far : PaletteRelativeAlign.Near);
PaletteRelativeAlign bAlign = PaletteRelativeAlign.Center;
PaletteRelativeAlign cAlign = (rtl == RightToLeft.Yes ? PaletteRelativeAlign.Near : PaletteRelativeAlign.Far);
// Size and position the contents of each aligned cell
PositionAlignContent(memento, palette, state, rtl, aAlign, PaletteRelativeAlign.Near, col0, row0, colWidths[0], rowHeights[0], spacingGap);
PositionAlignContent(memento, palette, state, rtl, aAlign, PaletteRelativeAlign.Center, col0, row1, colWidths[0], rowHeights[1], spacingGap);
PositionAlignContent(memento, palette, state, rtl, aAlign, PaletteRelativeAlign.Far, col0, row2, colWidths[0], rowHeights[2], spacingGap);
PositionAlignContent(memento, palette, state, rtl, bAlign, PaletteRelativeAlign.Near, col1, row0, colWidths[1], rowHeights[0], spacingGap);
PositionAlignContent(memento, palette, state, rtl, bAlign, PaletteRelativeAlign.Center, col1, row1, colWidths[1], rowHeights[1], spacingGap);
PositionAlignContent(memento, palette, state, rtl, bAlign, PaletteRelativeAlign.Far, col1, row2, colWidths[1], rowHeights[2], spacingGap);
PositionAlignContent(memento, palette, state, rtl, cAlign, PaletteRelativeAlign.Near, col2, row0, colWidths[2], rowHeights[0], spacingGap);
PositionAlignContent(memento, palette, state, rtl, cAlign, PaletteRelativeAlign.Center, col2, row1, colWidths[2], rowHeights[1], spacingGap);
PositionAlignContent(memento, palette, state, rtl, cAlign, PaletteRelativeAlign.Far, col2, row2, colWidths[2], rowHeights[2], spacingGap);
// Ask the memento to adjust itself for the required orientation
memento.AdjustForOrientation(orientation, cacheDisplayRect);
return memento;
}
/// <summary>
/// Get the preferred size for drawing the content.
/// </summary>
/// <param name="context">Layout context.</param>
/// <param name="palette">Content palette details.</param>
/// <param name="values">Content values.</param>
/// <param name="orientation">Visual orientation of the content.</param>
/// <param name="state">State associated with rendering.</param>
/// <param name="composition">Should draw on a composition element.</param>
/// <param name="glowing">If composition, should glowing be drawn.</param>
/// <returns>Preferred size.</returns>
public override Size GetContentPreferredSize(ViewLayoutContext context,
IPaletteContent palette,
IContentValues values,
VisualOrientation orientation,
PaletteState state,
bool composition,
bool glowing)
{
Debug.Assert(context != null);
Debug.Assert(palette != null);
Debug.Assert(values != null);
// Validate parameter references
if (context == null) throw new ArgumentNullException("context");
if (palette == null) throw new ArgumentNullException("palette");
Debug.Assert(context.Control != null);
Debug.Assert(!context.Control.IsDisposed);
// Provide a maximum sized rectangle for placing content into, in
// order to work out how much of the space is actually allocated
Rectangle displayRect = new Rectangle(Point.Empty, new Size(int.MaxValue, int.MaxValue));
// Track the allocated space in each grid position
Size[,] allocation = new Size[3, 3] { { Size.Empty, Size.Empty, Size.Empty },
{ Size.Empty, Size.Empty, Size.Empty },
{ Size.Empty, Size.Empty, Size.Empty } };
// Create a memento for storing calculations
using (StandardContentMemento memento = new StandardContentMemento())
{
// Cache the size of a spacing gap
int spacingGap = palette.GetContentAdjacentGap(state);
// Is the content intended for a vertical drawing orientation?
bool vertical = (orientation == VisualOrientation.Left) ||
(orientation == VisualOrientation.Right);
// Drawing vertical means we can ignore right to left, otherwise get value from control
RightToLeft rtl = (vertical ? RightToLeft.No : context.Control.RightToLeft);
// Allocate space for each required content in turn
AllocateImageSpace(memento, palette, values, state, displayRect, rtl, ref allocation);
AllocateShortTextSpace(context, context.Graphics, memento, palette, values, state, displayRect, rtl, spacingGap, ref allocation, composition, glowing);
AllocateLongTextSpace(context, context.Graphics, memento, palette, values, state, displayRect, rtl, spacingGap, ref allocation, composition, glowing);
// Add up total allocated for rows and columns
int allocatedWidth = AllocatedTotalWidth(allocation, -1, -1, spacingGap);
int allocatedHeight = AllocatedTotalHeight(allocation);
// Grab the padding for the content
Padding borderPadding = palette.GetContentPadding(state);
// For the form level buttons we have to calculate the correct padding based on caption area
PaletteContentStyle contentStyle = palette.GetContentStyle();
if ((contentStyle == PaletteContentStyle.ButtonForm) ||
(contentStyle == PaletteContentStyle.ButtonFormClose))
borderPadding = ContentPaddingForButtonForm(borderPadding, context, allocatedHeight);
// The preferred size needed depends on the orientation.
switch (orientation)
{
case VisualOrientation.Top:
case VisualOrientation.Bottom:
// Preferred size is the allocated space for the content plus the border padding
return new Size(allocatedWidth + borderPadding.Horizontal,
allocatedHeight + borderPadding.Vertical);
case VisualOrientation.Left:
case VisualOrientation.Right:
// Preferred size is the allocated space for the content plus the border padding
return new Size(allocatedHeight + borderPadding.Vertical,
allocatedWidth + borderPadding.Horizontal);
default:
// Should never happen!
Debug.Assert(false);
return Size.Empty;
}
}
}
/// <summary>
/// Gets the padding between adjacent content items.
/// </summary>
/// <param name="state">Palette value should be applicable to this state.</param>
/// <returns>Integer value.</returns>
public int GetContentAdjacentGap(PaletteState state)
{
return(_content.GetContentAdjacentGap(state));
}
/// <summary> /// Gets the padding between adjacent content items. /// </summary> /// <param name="state">Palette value should be applicable to this state.</param> /// <returns>Integer value.</returns> public override int GetContentAdjacentGap(PaletteState state) => _inherit.GetContentAdjacentGap(state);
