/// <summary>
/// Pixel accurate drawing of the requested text memento information.
/// </summary>
/// <param name="g">Graphics object used for drawing.</param>
/// <param name="brush">Brush for drawing text with.</param>
/// <param name="rect">Rectangle to draw text inside.</param>
/// <param name="rtl">Right to left setting for control.</param>
/// <param name="orientation">Orientation for drawing text.</param>
/// <param name="memento">Memento containing text context.</param>
/// <param name="state">State of the source element.</param>
/// <param name="composition">Should draw on a composition element.</param>
/// <param name="glowing">When on composition draw with glowing.</param>
/// <exception cref="ArgumentNullException"></exception>
/// <returns>True if draw succeeded; False is draw produced an error.</returns>
public static bool DrawString(Graphics g,
Brush brush,
Rectangle rect,
RightToLeft rtl,
VisualOrientation orientation,
bool composition,
bool glowing,
PaletteState state,
AccurateTextMemento memento)
{
Debug.Assert(g != null);
Debug.Assert(memento != null);
// Cannot draw with a null graphics instance
if (g == null)
{
throw new ArgumentNullException(nameof(g));
}
// Cannot draw with a null memento instance
if (memento == null)
{
throw new ArgumentNullException(nameof(memento));
}
bool ret = true;
// Is there a valid place to be drawn into
if ((rect.Width > 0) && (rect.Height > 0))
{
// Does the memento contain something to draw?
if (!memento.IsEmpty)
{
int translateX = 0;
int translateY = 0;
float rotation = 0f;
// Perform any transformations needed for orientation
switch (orientation)
{
case VisualOrientation.Bottom:
// Translate to opposite side of origin, so the rotate can
// then bring it back to original position but mirror image
translateX = (rect.X * 2) + rect.Width;
translateY = (rect.Y * 2) + rect.Height;
rotation = 180f;
break;
case VisualOrientation.Left:
// Invert the dimensions of the rectangle for drawing upwards
rect = new Rectangle(rect.X, rect.Y, rect.Height, rect.Width);
// Translate back from a quarter left turn to the original place
translateX = rect.X - rect.Y - 1;
translateY = rect.X + rect.Y + rect.Width;
rotation = 270;
break;
case VisualOrientation.Right:
// Invert the dimensions of the rectangle for drawing upwards
rect = new Rectangle(rect.X, rect.Y, rect.Height, rect.Width);
// Translate back from a quarter right turn to the original place
translateX = rect.X + rect.Y + rect.Height + 1;
translateY = -(rect.X - rect.Y);
rotation = 90f;
break;
}
// Apply the transforms if we have any to apply
if ((translateX != 0) || (translateY != 0))
{
g.TranslateTransform(translateX, translateY);
}
if (rotation != 0f)
{
g.RotateTransform(rotation);
}
try
{
if (Application.RenderWithVisualStyles && composition && glowing)
{
//DrawCompositionGlowingText(g, memento.Text, memento.Font, rect, state,
// SystemColors.ActiveCaptionText, true);
if (Environment.OSVersion.Version.Major >= 10 &&
Environment.OSVersion.Version.Build >= 10586)
{
DrawCompositionGlowingText(g, memento.Text, memento.Font, rect, state,
(state == PaletteState.Disabled)
? Color.FromArgb(170, 170, 170)
: ContrastColor(AccentColorService.GetColorByTypeName("ImmersiveSystemAccent")),
true);
}
else
{
DrawCompositionGlowingText(g, memento.Text, memento.Font, rect, state,
SystemColors.ActiveCaptionText, true);
}
}
else if (Application.RenderWithVisualStyles && composition)
{
//Check if correct in all cases
SolidBrush tmpBrush = brush as SolidBrush;
Color tmpColor = tmpBrush?.Color ?? SystemColors.ActiveCaptionText;
DrawCompositionText(g, memento.Text, memento.Font, rect, state,
tmpColor, true, memento.Format);
}
else
{
g.DrawString(memento.Text, memento.Font, brush, rect, memento.Format);
}
}
catch
{
// Ignore any error from the DrawString, usually because the display settings
// have changed causing Fonts to be invalid. Our controls will notice the change
// and refresh the fonts but sometimes the draw happens before the fonts are
// regenerated. Just ignore message and everything will sort itself out. Trust me!
ret = false;
}
finally
{
// Remove the applied transforms
if (rotation != 0f)
{
g.RotateTransform(-rotation);
}
if ((translateX != 0) || (translateY != 0))
{
g.TranslateTransform(-translateX, -translateY);
}
}
}
}
return(ret);
}
/// <summary>
/// Pixel accurate drawing of the requested text memento information.
/// </summary>
/// <param name="g">Graphics object used for drawing.</param>
/// <param name="brush">Brush for drawing text with.</param>
/// <param name="rect">Rectangle to draw text inside.</param>
/// <param name="rtl">Right to left setting for control.</param>
/// <param name="orientation">Orientation for drawing text.</param>
/// <param name="memento">Memento containing text context.</param>
/// <param name="state">State of the source element.</param>
/// <param name="composition">Should draw on a composition element.</param>
/// <returns>True if draw succeeded; False is draw produced an error.</returns>
public static bool DrawString(Graphics g,
Brush brush,
Rectangle rect,
RightToLeft rtl,
VisualOrientation orientation,
bool composition,
PaletteState state,
AccurateTextMemento memento)
{
Debug.Assert(g != null);
Debug.Assert(memento != null);
// Cannot draw with a null graphics instance
if (g == null)
throw new ArgumentNullException("g");
// Cannot draw with a null memento instance
if (memento == null)
throw new ArgumentNullException("memento");
bool ret = true;
// Is there a valid place to be drawn into
if ((rect.Width > 0) && (rect.Height > 0))
{
// Does the memento contain something to draw?
if (!memento.IsEmpty)
{
int translateX = 0;
int translateY = 0;
float rotation = 0f;
// Perform any transformations needed for orientation
switch (orientation)
{
case VisualOrientation.Bottom:
// Translate to opposite side of origin, so the rotate can
// then bring it back to original position but mirror image
translateX = rect.X * 2 + rect.Width;
translateY = rect.Y * 2 + rect.Height;
rotation = 180f;
break;
case VisualOrientation.Left:
// Invert the dimensions of the rectangle for drawing upwards
rect = new Rectangle(rect.X, rect.Y, rect.Height, rect.Width);
// Translate back from a quater left turn to the original place
translateX = rect.X - rect.Y - 1;
translateY = rect.X + rect.Y + rect.Width;
rotation = 270;
break;
case VisualOrientation.Right:
// Invert the dimensions of the rectangle for drawing upwards
rect = new Rectangle(rect.X, rect.Y, rect.Height, rect.Width);
// Translate back from a quater right turn to the original place
translateX = rect.X + rect.Y + rect.Height + 1;
translateY = -(rect.X - rect.Y);
rotation = 90f;
break;
}
// Apply the transforms if we have any to apply
if ((translateX != 0) || (translateY != 0))
g.TranslateTransform(translateX, translateY);
if (rotation != 0f)
g.RotateTransform(rotation);
try
{
if (composition)
DrawCompositionGlowingText(g, memento.Text, memento.Font, rect, state,
SystemColors.ActiveCaptionText, true);
else
g.DrawString(memento.Text, memento.Font, brush, rect, memento.Format);
}
catch
{
// Ignore any error from the DrawString, usually because the display settings
// have changed causing Fonts to be invalid. Our controls will notice the change
// and refresh the fonts but sometimes the draw happens before the fonts are
// regenerated. Just ignore message and everything will sort itself out. Trust me!
ret = false;
}
finally
{
// Remove the applied transforms
if (rotation != 0f)
g.RotateTransform(-rotation);
if ((translateX != 0) || (translateY != 0))
g.TranslateTransform(-translateX, -translateY);
}
}
}
return ret;
}
/// <summary>
/// Dispose of resources.
/// </summary>
public void Dispose()
{
if (ShortTextMemento != null)
{
ShortTextMemento.Dispose();
ShortTextMemento = null;
}
if (LongTextMemento != null)
{
LongTextMemento.Dispose();
LongTextMemento = null;
}
}
/// <summary>
/// Pixel accurate drawing of the requested text memento information.
/// </summary>
/// <param name="g">Graphics object used for drawing.</param>
/// <param name="brush">Brush for drawing text with.</param>
/// <param name="rect">Rectangle to draw text inside.</param>
/// <param name="rtl">Right to left setting for control.</param>
/// <param name="orientation">Orientation for drawing text.</param>
/// <param name="memento">Memento containing text context.</param>
/// <param name="state">State of the source element.</param>
/// <param name="composition">Should draw on a composition element.</param>
/// <returns>True if draw succeeded; False is draw produced an error.</returns>
public static bool DrawString(Graphics g,
Brush brush,
Rectangle rect,
RightToLeft rtl,
VisualOrientation orientation,
bool composition,
PaletteState state,
AccurateTextMemento memento)
{
Debug.Assert(g != null);
Debug.Assert(memento != null);
// Cannot draw with a null graphics instance
if (g == null)
{
throw new ArgumentNullException("g");
}
// Cannot draw with a null memento instance
if (memento == null)
{
throw new ArgumentNullException("memento");
}
bool ret = true;
// Is there a valid place to be drawn into
if ((rect.Width > 0) && (rect.Height > 0))
{
// Does the memento contain something to draw?
if (!memento.IsEmpty)
{
int translateX = 0;
int translateY = 0;
float rotation = 0f;
// Perform any transformations needed for orientation
switch (orientation)
{
case VisualOrientation.Bottom:
// Translate to opposite side of origin, so the rotate can
// then bring it back to original position but mirror image
translateX = rect.X * 2 + rect.Width;
translateY = rect.Y * 2 + rect.Height;
rotation = 180f;
break;
case VisualOrientation.Left:
// Invert the dimensions of the rectangle for drawing upwards
rect = new Rectangle(rect.X, rect.Y, rect.Height, rect.Width);
// Translate back from a quater left turn to the original place
translateX = rect.X - rect.Y - 1;
translateY = rect.X + rect.Y + rect.Width;
rotation = 270;
break;
case VisualOrientation.Right:
// Invert the dimensions of the rectangle for drawing upwards
rect = new Rectangle(rect.X, rect.Y, rect.Height, rect.Width);
// Translate back from a quater right turn to the original place
translateX = rect.X + rect.Y + rect.Height + 1;
translateY = -(rect.X - rect.Y);
rotation = 90f;
break;
}
// Apply the transforms if we have any to apply
if ((translateX != 0) || (translateY != 0))
{
g.TranslateTransform(translateX, translateY);
}
if (rotation != 0f)
{
g.RotateTransform(rotation);
}
try
{
if (composition)
{
DrawCompositionGlowingText(g, memento.Text, memento.Font, rect, state,
SystemColors.ActiveCaptionText, true);
}
else
{
g.DrawString(memento.Text, memento.Font, brush, rect, memento.Format);
}
}
catch
{
// Ignore any error from the DrawString, usually because the display settings
// have changed causing Fonts to be invalid. Our controls will notice the change
// and refresh the fonts but sometimes the draw happens before the fonts are
// regenerated. Just ignore message and everything will sort itself out. Trust me!
ret = false;
}
finally
{
// Remove the applied transforms
if (rotation != 0f)
{
g.RotateTransform(-rotation);
}
if ((translateX != 0) || (translateY != 0))
{
g.TranslateTransform(-translateX, -translateY);
}
}
}
}
return(ret);
}
