private static void AllocateShortTextSpace(ViewLayoutContext context,
Graphics g,
StandardContentMemento memento,
IPaletteContent paletteContent,
IContentValues contentValues,
PaletteState state,
Rectangle displayRect,
RightToLeft rtl,
int spacingGap,
ref Size[,] allocation,
bool composition,
bool glowing)
{
// By default, we cannot draw the text
memento.DrawShortText = false;
// Get the defined text for display
string shortText = contentValues.GetShortText();
// Is there any text to be drawn?
if ((shortText != null) && (shortText.Length > 0))
{
// If the text is not allowed to span multiple lines
if (paletteContent.GetContentShortTextMultiLine(state) == InheritBool.False)
{
// Replace any carriage returns and newlines with just spaces
shortText = shortText.Replace("\r\n", " ");
shortText = shortText.Replace("\n", " ");
shortText = shortText.Replace("\r", " ");
}
// Convert from alignment enums to integers
int alignHIndex = RightToLeftIndex(rtl, paletteContent.GetContentShortTextH(state));
int alignVIndex = (int)paletteContent.GetContentShortTextV(state);
// Cache the rendering hint used
memento.ShortTextHint = CommonHelper.PaletteTextHintToRenderingHint(paletteContent.GetContentShortTextHint(state));
memento.ShortTextTrimming = paletteContent.GetContentShortTextTrim(state);
bool fontChanged = false;
Font textFont = paletteContent.GetContentShortTextFont(state);
// Get the appropriate font to use in the caption area
if (paletteContent.GetContentStyle() == PaletteContentStyle.HeaderForm)
{
Font captionFont = ContentFontForButtonForm(context, textFont);
fontChanged = (captionFont != textFont);
textFont = captionFont;
}
// Get a pixel accurate measure of text drawing space needed
memento.ShortTextMemento = AccurateText.MeasureString(g,
rtl,
shortText,
textFont,
memento.ShortTextTrimming,
paletteContent.GetContentShortTextMultiLineH(state),
paletteContent.GetContentShortTextPrefix(state),
memento.ShortTextHint,
composition,
glowing,
fontChanged);
// Space required for short text starts with the text width itself
Size requiredSpace = memento.ShortTextMemento.Size;
// Find the space available given our required alignment
if (AllocateAlignmentSpace(alignHIndex, alignVIndex,
allocation, displayRect,
spacingGap, memento.ShortTextTrimming,
ref requiredSpace))
{
// Allocate the actual space used up
// Cache the actual draw size of the text
memento.ShortTextRect.Size = requiredSpace;
// Mark the memento to draw the short text
memento.DrawShortText = true;
}
}
}
/// <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 style appropriate for this content.
/// </summary>
/// <returns>Content style.</returns>
public override PaletteContentStyle GetContentStyle()
{
return(_inherit.GetContentStyle());
}
/// <summary> /// Gets the style appropriate for this content. /// </summary> /// <returns>Content style.</returns> public override PaletteContentStyle GetContentStyle() => Apply?_primary.GetContentStyle() : _backup.GetContentStyle();
/// <summary> /// Gets the style appropriate for this content. /// </summary> /// <returns>Content style.</returns> public virtual PaletteContentStyle GetContentStyle() => Apply?_primaryContent.GetContentStyle() : _backupContent.GetContentStyle();
/// <summary> /// Gets the style appropriate for this content. /// </summary> /// <returns>Content style.</returns> public override PaletteContentStyle GetContentStyle() => _inherit.GetContentStyle();
