private void RenderSelection(EditText editText, UIRenderingContext context, int start, int length, Color color, out float offsetTextStart, out float offsetAlignment, out float selectionSize, UIBatch Batch)
{
// calculate the size of the text region by removing padding
var textRegionSize = new Vector2(editText.ActualWidth - editText.Padding.Left - editText.Padding.Right,
editText.ActualHeight - editText.Padding.Top - editText.Padding.Bottom);
var font = editText.Font;
// determine the image to draw in background of the edit text
var fontScale = editText.LayoutingContext.RealVirtualResolutionRatio;
var provider = editText.IsSelectionActive ? editText.ActiveImage : editText.MouseOverState == MouseOverState.MouseOverElement ? editText.MouseOverImage : editText.InactiveImage;
var image = provider?.GetSprite();
var fontSize = new Vector2(fontScale.Y * editText.ActualTextSize);
offsetTextStart = font.MeasureString(editText.TextToDisplay, ref fontSize, start).X;
selectionSize = font.MeasureString(editText.TextToDisplay, ref fontSize, start + length).X - offsetTextStart;
var lineSpacing = font.GetTotalLineSpacing(editText.ActualTextSize);
if (font.FontType == SpriteFontType.Dynamic)
{
offsetTextStart /= fontScale.X;
selectionSize /= fontScale.X;
}
var scaleRatio = editText.ActualTextSize / font.Size;
if (font.FontType != SpriteFontType.Dynamic)
{
offsetTextStart *= scaleRatio;
selectionSize *= scaleRatio;
lineSpacing *= editText.ActualTextSize / font.Size;
}
offsetAlignment = -textRegionSize.X / 2f;
if (editText.TextAlignment != TextAlignment.Left)
{
var textWidth = font.MeasureString(editText.TextToDisplay, ref fontSize).X;
if (font.FontType == SpriteFontType.Dynamic)
{
textWidth /= fontScale.X;
}
else
{
textWidth *= scaleRatio;
}
offsetAlignment = editText.TextAlignment == TextAlignment.Center ? -textWidth / 2 : -textRegionSize.X / 2f + (textRegionSize.X - textWidth);
}
var selectionWorldMatrix = editText.WorldMatrixInternal;
selectionWorldMatrix.M41 += offsetTextStart + selectionSize / 2 + offsetAlignment;
var selectionScaleVector = new Vector3(selectionSize, editText.LineCount * lineSpacing, 0);
Batch.DrawRectangle(ref selectionWorldMatrix, ref selectionScaleVector, ref color, context.DepthBias + 1);
}
public override void RenderColor(UIElement element, UIRenderingContext context, UIBatch Batch)
{
base.RenderColor(element, context, Batch);
var bar = (ScrollBar)element;
// round the size of the bar to nearest pixel modulo to avoid to have a bar varying by one pixel length while scrolling
var barSize = bar.RenderSizeInternal;
var realVirtualRatio = bar.LayoutingContext.RealVirtualResolutionRatio;
for (var i = 0; i < 2; i++)
{
barSize[i] = (float)(Math.Ceiling(barSize[i] * realVirtualRatio[i]) / realVirtualRatio[i]);
}
Batch.DrawRectangle(ref element.WorldMatrixInternal, ref barSize, ref bar.BarColorInternal, context.DepthBias);
}
public override void RenderColor(UIElement element, UIRenderingContext context, UIBatch Batch)
{
var modalElement = (ModalElement)element;
// end the current UI image batching so that the overlay is written over it with correct transparency
Batch.End();
var uiResolution = new Vector3(context.Resolution.X, context.Resolution.Y, 0);
Batch.Begin(context.GraphicsContext, ref context.ViewProjectionMatrix, BlendStates.AlphaBlend, noStencilNoDepth, 0);
Batch.DrawRectangle(ref identity, ref uiResolution, ref modalElement.OverlayColorInternal, context.DepthBias);
Batch.End(); // ensure that overlay is written before possible next transparent element.
// restart the image batch session
Batch.Begin(context.GraphicsContext, ref context.ViewProjectionMatrix, BlendStates.AlphaBlend, KeepStencilValueState, context.StencilTestReferenceValue);
context.DepthBias += 1;
base.RenderColor(element, context, Batch);
}
public override void RenderColor(UIElement element, UIRenderingContext context, UIBatch Batch)
{
base.RenderColor(element, context, Batch);
var editText = (EditText)element;
if (editText.Font == null)
{
return;
}
// determine the image to draw in background of the edit text
var fontScale = element.LayoutingContext.RealVirtualResolutionRatio;
var color = editText.RenderOpacity * Color.White;
var provider = editText.IsSelectionActive ? editText.ActiveImage : editText.MouseOverState == MouseOverState.MouseOverElement ? editText.MouseOverImage : editText.InactiveImage;
var image = provider?.GetSprite();
if (image?.Texture != null)
{
Batch.DrawImage(image.Texture, ref editText.WorldMatrixInternal, ref image.RegionInternal, ref editText.RenderSizeInternal, ref image.BordersInternal, ref color, context.DepthBias, image.Orientation);
}
// calculate the size of the text region by removing padding
var textRegionSize = new Vector2(editText.ActualWidth - editText.Padding.Left - editText.Padding.Right,
editText.ActualHeight - editText.Padding.Top - editText.Padding.Bottom);
var font = editText.Font;
var caretColor = editText.RenderOpacity * editText.CaretColor;
var offsetTextStart = 0f;
var offsetAlignment = 0f;
var selectionSize = 0f;
// Draw the composition selection
if (editText.Composition.Length > 0)
{
var imeSelectionColor = editText.RenderOpacity * editText.IMESelectionColor;
RenderSelection(editText, context, editText.SelectionStart, editText.Composition.Length, imeSelectionColor, out offsetTextStart, out offsetAlignment, out selectionSize, Batch);
}
// Draw the regular selection
else if (editText.IsSelectionActive)
{
var selectionColor = editText.RenderOpacity * editText.SelectionColor;
RenderSelection(editText, context, editText.SelectionStart, editText.SelectionLength, selectionColor, out offsetTextStart, out offsetAlignment, out selectionSize, Batch);
}
// create the text draw command
var drawCommand = new SpriteFont.InternalUIDrawCommand
{
Color = editText.RenderOpacity * editText.TextColor,
DepthBias = context.DepthBias + 2,
RealVirtualResolutionRatio = fontScale,
RequestedFontSize = editText.ActualTextSize,
Batch = Batch,
SnapText = context.ShouldSnapText && !editText.DoNotSnapText,
Matrix = editText.WorldMatrixInternal,
Alignment = editText.TextAlignment,
TextBoxSize = textRegionSize
};
if (editText.Font.FontType == SpriteFontType.SDF)
{
Batch.End();
Batch.BeginCustom(context.GraphicsContext, 1);
}
// Draw the text
Batch.DrawString(font, editText.TextToDisplay, ref drawCommand);
if (editText.Font.FontType == SpriteFontType.SDF)
{
Batch.End();
Batch.BeginCustom(context.GraphicsContext, 0);
}
// Draw the cursor
if (editText.IsCaretVisible)
{
var lineSpacing = editText.Font.GetTotalLineSpacing(editText.ActualTextSize);
if (editText.Font.FontType != SpriteFontType.Dynamic)
{
lineSpacing *= editText.ActualTextSize / font.Size;
}
var sizeCaret = editText.CaretWidth / fontScale.X;
var caretWorldMatrix = element.WorldMatrixInternal;
caretWorldMatrix.M41 += offsetTextStart + offsetAlignment + (editText.CaretPosition > editText.SelectionStart? selectionSize: 0);
var caretScaleVector = new Vector3(sizeCaret, editText.LineCount * lineSpacing, 0);
Batch.DrawRectangle(ref caretWorldMatrix, ref caretScaleVector, ref caretColor, context.DepthBias + 3);
}
}
public override void RenderColor(UIElement element, UIRenderingContext context, UIBatch Batch)
{
base.RenderColor(element, context, Batch);
var scrollingText = (ScrollingText)element;
if (scrollingText.Font == null || scrollingText.TextToDisplay == null)
{
return;
}
var offset = scrollingText.ScrollingOffset;
var textWorldMatrix = element.WorldMatrix;
textWorldMatrix.M41 += textWorldMatrix.M11 * offset;
textWorldMatrix.M42 += textWorldMatrix.M12 * offset;
textWorldMatrix.M43 += textWorldMatrix.M13 * offset;
textWorldMatrix.M44 += textWorldMatrix.M14 * offset;
// create the scrolling text draw command
var drawCommand = new SpriteFont.InternalUIDrawCommand
{
Color = scrollingText.RenderOpacity * scrollingText.TextColor,
VertAlignment = scrollingText.TextVerticalAlignment,
LineSpacingAdjustment = scrollingText.LineSpacingAdjustment,
DepthBias = context.DepthBias + 1,
RealVirtualResolutionRatio = element.LayoutingContext.RealVirtualResolutionRatio,
RequestedFontSize = scrollingText.ActualTextSize,
Batch = Batch,
SnapText = context.ShouldSnapText && !scrollingText.DoNotSnapText,
Matrix = textWorldMatrix,
Alignment = TextAlignment.Left,
TextBoxSize = new Vector2(scrollingText.ActualWidth, scrollingText.ActualHeight)
};
// flush the current content of the UI image batch
Batch.End();
// draw a clipping mask
Batch.Begin(context.GraphicsContext, ref context.ViewProjectionMatrix, BlendStates.ColorDisabled, IncreaseStencilValueState, context.StencilTestReferenceValue);
Batch.DrawRectangle(ref element.WorldMatrixInternal, ref element.RenderSizeInternal, ref blackColor, context.DepthBias);
Batch.End();
// draw the element it-self with stencil test value of "Context.Value + 1"
Batch.Begin(context.GraphicsContext, ref context.ViewProjectionMatrix, BlendStates.AlphaBlend, KeepStencilValueState, context.StencilTestReferenceValue + 1);
if (scrollingText.Font.FontType == SpriteFontType.SDF)
{
Batch.End();
Batch.BeginCustom(context.GraphicsContext, 1);
}
Batch.DrawString(scrollingText.Font, scrollingText.TextToDisplay, ref drawCommand);
Batch.End();
// un-draw the clipping mask
Batch.Begin(context.GraphicsContext, ref context.ViewProjectionMatrix, BlendStates.ColorDisabled, DecreaseStencilValueState, context.StencilTestReferenceValue + 1);
Batch.DrawRectangle(ref element.WorldMatrixInternal, ref element.RenderSizeInternal, ref blackColor, context.DepthBias + 2);
Batch.End();
// restart the Batch session
Batch.Begin(context.GraphicsContext, ref context.ViewProjectionMatrix, BlendStates.AlphaBlend, KeepStencilValueState, context.StencilTestReferenceValue);
}