private Rectangle PaintPrivate(Graphics g,
Rectangle clipBounds,
Rectangle cellBounds,
int rowIndex,
DataGridViewElementStates elementState,
object formattedValue,
string errorText,
DataGridViewCellStyle cellStyle,
DataGridViewAdvancedBorderStyle advancedBorderStyle,
DataGridViewPaintParts paintParts,
bool computeContentBounds,
bool computeErrorIconBounds,
bool paint)
{
// Parameter checking.
// One bit and one bit only should be turned on
Debug.Assert(paint || computeContentBounds || computeErrorIconBounds);
Debug.Assert(!paint || !computeContentBounds || !computeErrorIconBounds);
Debug.Assert(!computeContentBounds || !computeErrorIconBounds || !paint);
Debug.Assert(!computeErrorIconBounds || !paint || !computeContentBounds);
Debug.Assert(cellStyle != null);
Point ptCurrentCell = DataGridView.CurrentCellAddress;
bool cellSelected = (elementState & DataGridViewElementStates.Selected) != 0;
bool cellCurrent = (ptCurrentCell.X == ColumnIndex && ptCurrentCell.Y == rowIndex);
Rectangle resultBounds;
string formattedString = formattedValue as string;
SolidBrush backBrush = DataGridView.GetCachedBrush((PaintSelectionBackground(paintParts) && cellSelected) ? cellStyle.SelectionBackColor : cellStyle.BackColor);
SolidBrush foreBrush = DataGridView.GetCachedBrush(cellSelected ? cellStyle.SelectionForeColor : cellStyle.ForeColor);
if (paint && PaintBorder(paintParts))
{
PaintBorder(g, clipBounds, cellBounds, cellStyle, advancedBorderStyle);
}
Rectangle valBounds = cellBounds;
Rectangle borderWidths = BorderWidths(advancedBorderStyle);
valBounds.Offset(borderWidths.X, borderWidths.Y);
valBounds.Width -= borderWidths.Right;
valBounds.Height -= borderWidths.Bottom;
if (valBounds.Height <= 0 || valBounds.Width <= 0)
{
return(Rectangle.Empty);
}
if (paint && PaintBackground(paintParts) && backBrush.Color.A == 255)
{
g.FillRectangle(backBrush, valBounds);
}
if (cellStyle.Padding != Padding.Empty)
{
if (DataGridView.RightToLeftInternal)
{
valBounds.Offset(cellStyle.Padding.Right, cellStyle.Padding.Top);
}
else
{
valBounds.Offset(cellStyle.Padding.Left, cellStyle.Padding.Top);
}
valBounds.Width -= cellStyle.Padding.Horizontal;
valBounds.Height -= cellStyle.Padding.Vertical;
}
Rectangle errorBounds = valBounds;
if (valBounds.Height > 0 && valBounds.Width > 0 && (paint || computeContentBounds))
{
switch (FlatStyle)
{
case FlatStyle.Standard:
case FlatStyle.System:
if (DataGridView.ApplyVisualStylesToInnerCells)
{
if (paint && PaintContentBackground(paintParts))
{
PushButtonState pbState = VisualStyles.PushButtonState.Normal;
if ((ButtonState & (ButtonState.Pushed | ButtonState.Checked)) != 0)
{
pbState = PushButtonState.Pressed;
}
else if (DataGridView.MouseEnteredCellAddress.Y == rowIndex &&
DataGridView.MouseEnteredCellAddress.X == ColumnIndex && mouseInContentBounds)
{
pbState = PushButtonState.Hot;
}
if (PaintFocus(paintParts) && cellCurrent && DataGridView.ShowFocusCues && DataGridView.Focused)
{
pbState |= PushButtonState.Default;
}
DataGridViewButtonCellRenderer.DrawButton(g, valBounds, (int)pbState);
}
resultBounds = valBounds;
valBounds = DataGridViewButtonCellRenderer.DataGridViewButtonRenderer.GetBackgroundContentRectangle(g, valBounds);
}
else
{
if (paint && PaintContentBackground(paintParts))
{
ControlPaint.DrawBorder(
g,
valBounds,
SystemColors.Control,
(ButtonState == ButtonState.Normal) ? ButtonBorderStyle.Outset : ButtonBorderStyle.Inset);
}
resultBounds = valBounds;
valBounds.Inflate(-SystemInformation.Border3DSize.Width, -SystemInformation.Border3DSize.Height);
}
break;
case FlatStyle.Flat:
// ButtonBase::PaintFlatDown and ButtonBase::PaintFlatUp paint the border in the same way
valBounds.Inflate(-1, -1);
if (paint && PaintContentBackground(paintParts))
{
ButtonBaseAdapter.DrawDefaultBorder(g, valBounds, foreBrush.Color, true /*isDefault == true*/);
if (backBrush.Color.A == 255)
{
if ((ButtonState & (ButtonState.Pushed | ButtonState.Checked)) != 0)
{
ButtonBaseAdapter.ColorData colors = ButtonBaseAdapter.PaintFlatRender(
g,
cellStyle.ForeColor,
cellStyle.BackColor,
DataGridView.Enabled).Calculate();
using var hdc = new DeviceContextHdcScope(g);
using var hbrush = new Gdi32.CreateBrushScope(
colors.options.HighContrast ? colors.buttonShadow : colors.lowHighlight);
hdc.FillRectangle(valBounds, hbrush);
}
else if (DataGridView.MouseEnteredCellAddress.Y == rowIndex &&
DataGridView.MouseEnteredCellAddress.X == ColumnIndex && mouseInContentBounds)
{
using var hdc = new DeviceContextHdcScope(g);
using var hbrush = new Gdi32.CreateBrushScope(SystemColors.ControlDark);
hdc.FillRectangle(valBounds, hbrush);
}
}
}
resultBounds = valBounds;
break;
default:
Debug.Assert(FlatStyle == FlatStyle.Popup, "FlatStyle.Popup is the last flat style");
valBounds.Inflate(-1, -1);
if (paint && PaintContentBackground(paintParts))
{
if ((ButtonState & (ButtonState.Pushed | ButtonState.Checked)) != 0)
{
// paint down
ButtonBaseAdapter.ColorData colors = ButtonBaseAdapter.PaintPopupRender(
g,
cellStyle.ForeColor,
cellStyle.BackColor,
DataGridView.Enabled).Calculate();
ButtonBaseAdapter.DrawDefaultBorder(
g,
valBounds,
colors.options.HighContrast ? colors.windowText : colors.windowFrame,
isDefault: true);
ControlPaint.DrawBorder(
g,
valBounds,
colors.options.HighContrast ? colors.windowText : colors.buttonShadow,
ButtonBorderStyle.Solid);
}
else if (DataGridView.MouseEnteredCellAddress.Y == rowIndex &&
DataGridView.MouseEnteredCellAddress.X == ColumnIndex &&
mouseInContentBounds)
{
// paint over
ButtonBaseAdapter.ColorData colors = ButtonBaseAdapter.PaintPopupRender(
g,
cellStyle.ForeColor,
cellStyle.BackColor,
DataGridView.Enabled).Calculate();
ButtonBaseAdapter.DrawDefaultBorder(
g,
valBounds,
colors.options.HighContrast ? colors.windowText : colors.buttonShadow,
isDefault: false);
ButtonBaseAdapter.Draw3DLiteBorder(g, valBounds, colors, true);
}
else
{
// paint up
ButtonBaseAdapter.ColorData colors = ButtonBaseAdapter.PaintPopupRender(
g,
cellStyle.ForeColor,
cellStyle.BackColor,
DataGridView.Enabled).Calculate();
ButtonBaseAdapter.DrawDefaultBorder(
g,
valBounds,
colors.options.HighContrast ? colors.windowText : colors.buttonShadow,
isDefault: false);
ControlPaint.DrawBorderSolid(
g,
valBounds,
colors.options.HighContrast ? colors.windowText : colors.buttonShadow);
}
}
resultBounds = valBounds;
break;
}
}
else if (computeErrorIconBounds)
{
if (!string.IsNullOrEmpty(errorText))
{
resultBounds = ComputeErrorIconBounds(errorBounds);
}
else
{
resultBounds = Rectangle.Empty;
}
}
else
{
Debug.Assert(valBounds.Height <= 0 || valBounds.Width <= 0);
resultBounds = Rectangle.Empty;
}
if (paint &&
PaintFocus(paintParts) &&
cellCurrent &&
DataGridView.ShowFocusCues &&
DataGridView.Focused &&
valBounds.Width > 2 * SystemInformation.Border3DSize.Width + 1 &&
valBounds.Height > 2 * SystemInformation.Border3DSize.Height + 1)
{
// Draw focus rectangle
if (FlatStyle == FlatStyle.System || FlatStyle == FlatStyle.Standard)
{
ControlPaint.DrawFocusRectangle(g, Rectangle.Inflate(valBounds, -1, -1), Color.Empty, SystemColors.Control);
}
else if (FlatStyle == FlatStyle.Flat)
{
if ((ButtonState & (ButtonState.Pushed | ButtonState.Checked)) != 0 ||
(DataGridView.CurrentCellAddress.Y == rowIndex && DataGridView.CurrentCellAddress.X == ColumnIndex))
{
ButtonBaseAdapter.ColorData colors = ButtonBaseAdapter.PaintFlatRender(
g,
cellStyle.ForeColor,
cellStyle.BackColor,
DataGridView.Enabled).Calculate();
string text = formattedString ?? string.Empty;
ButtonBaseAdapter.LayoutOptions options = ButtonFlatAdapter.PaintFlatLayout(
true,
SystemInformation.HighContrast,
1,
valBounds,
Padding.Empty,
false,
cellStyle.Font,
text,
DataGridView.Enabled,
DataGridViewUtilities.ComputeDrawingContentAlignmentForCellStyleAlignment(cellStyle.Alignment),
DataGridView.RightToLeft);
options.everettButtonCompat = false;
ButtonBaseAdapter.LayoutData layout = options.Layout();
ButtonBaseAdapter.DrawFlatFocus(
g,
layout.focus,
colors.options.HighContrast ? colors.windowText : colors.constrastButtonShadow);
}
}
else
{
Debug.Assert(FlatStyle == FlatStyle.Popup, "FlatStyle.Popup is the last flat style");
if ((ButtonState & (ButtonState.Pushed | ButtonState.Checked)) != 0 ||
(DataGridView.CurrentCellAddress.Y == rowIndex && DataGridView.CurrentCellAddress.X == ColumnIndex))
{
// If we are painting the current cell, then paint the text up.
// If we are painting the current cell and the current cell is pressed down, then paint the text down.
bool paintUp = (ButtonState == ButtonState.Normal);
string text = formattedString ?? string.Empty;
ButtonBaseAdapter.LayoutOptions options = ButtonPopupAdapter.PaintPopupLayout(
paintUp,
SystemInformation.HighContrast ? 2 : 1,
valBounds,
Padding.Empty,
false,
cellStyle.Font,
text,
DataGridView.Enabled,
DataGridViewUtilities.ComputeDrawingContentAlignmentForCellStyleAlignment(cellStyle.Alignment),
DataGridView.RightToLeft);
options.everettButtonCompat = false;
ButtonBaseAdapter.LayoutData layout = options.Layout();
ControlPaint.DrawFocusRectangle(
g,
layout.focus,
cellStyle.ForeColor,
cellStyle.BackColor);
}
}
}
if (formattedString != null && paint && DataGridViewCell.PaintContentForeground(paintParts))
{
// Font independent margins
valBounds.Offset(DATAGRIDVIEWBUTTONCELL_horizontalTextMargin, DATAGRIDVIEWBUTTONCELL_verticalTextMargin);
valBounds.Width -= 2 * DATAGRIDVIEWBUTTONCELL_horizontalTextMargin;
valBounds.Height -= 2 * DATAGRIDVIEWBUTTONCELL_verticalTextMargin;
if ((ButtonState & (ButtonState.Pushed | ButtonState.Checked)) != 0 &&
FlatStyle != FlatStyle.Flat && FlatStyle != FlatStyle.Popup)
{
valBounds.Offset(1, 1);
valBounds.Width--;
valBounds.Height--;
}
if (valBounds.Width > 0 && valBounds.Height > 0)
{
Color textColor;
if (DataGridView.ApplyVisualStylesToInnerCells &&
(FlatStyle == FlatStyle.System || FlatStyle == FlatStyle.Standard))
{
textColor = DataGridViewButtonCellRenderer.DataGridViewButtonRenderer.GetColor(ColorProperty.TextColor);
}
else
{
textColor = foreBrush.Color;
}
TextFormatFlags flags = DataGridViewUtilities.ComputeTextFormatFlagsForCellStyleAlignment(DataGridView.RightToLeftInternal, cellStyle.Alignment, cellStyle.WrapMode);
TextRenderer.DrawText(g,
formattedString,
cellStyle.Font,
valBounds,
textColor,
flags);
}
}
if (DataGridView.ShowCellErrors && paint && PaintErrorIcon(paintParts))
{
PaintErrorIcon(g, cellStyle, rowIndex, cellBounds, errorBounds, errorText);
}
return(resultBounds);
}