int32 FSlateTextLayout::OnPaint( const FPaintArgs& Args, const FGeometry& AllottedGeometry, const FSlateRect& MyClippingRect, FSlateWindowElementList& OutDrawElements, int32 LayerId, const FWidgetStyle& InWidgetStyle, bool bParentEnabled ) const
{
const FSlateRect ClippingRect = AllottedGeometry.GetClippingRect().IntersectionWith(MyClippingRect);
const ESlateDrawEffect::Type DrawEffects = bParentEnabled ? ESlateDrawEffect::None : ESlateDrawEffect::DisabledEffect;
static bool ShowDebug = false;
FLinearColor BlockHue( 0, 1.0f, 1.0f, 0.5 );
int32 HighestLayerId = LayerId;
for (const FTextLayout::FLineView& LineView : LineViews)
{
// Is this line visible?
const FSlateRect LineViewRect(AllottedGeometry.AbsolutePosition + LineView.Offset, AllottedGeometry.AbsolutePosition + LineView.Offset + LineView.Size);
const FSlateRect VisibleLineView = ClippingRect.IntersectionWith(LineViewRect);
if (VisibleLineView.IsEmpty())
{
continue;
}
// Render any underlays for this line
const int32 HighestUnderlayLayerId = OnPaintHighlights( Args, LineView, LineView.UnderlayHighlights, DefaultTextStyle, AllottedGeometry, ClippingRect, OutDrawElements, LayerId, InWidgetStyle, bParentEnabled );
const int32 BlockDebugLayer = HighestUnderlayLayerId;
const int32 TextLayer = BlockDebugLayer + 1;
int32 HighestBlockLayerId = TextLayer;
// Render every block for this line
for (const TSharedRef< ILayoutBlock >& Block : LineView.Blocks)
{
if ( ShowDebug )
{
BlockHue.R += 50.0f;
// The block size and offset values are pre-scaled, so we need to account for that when converting the block offsets into paint geometry
const float InverseScale = Inverse(AllottedGeometry.Scale);
FSlateDrawElement::MakeBox(
OutDrawElements,
BlockDebugLayer,
AllottedGeometry.ToPaintGeometry(TransformVector(InverseScale, Block->GetSize()), FSlateLayoutTransform(TransformPoint(InverseScale, Block->GetLocationOffset()))),
&DefaultTextStyle.HighlightShape,
ClippingRect,
DrawEffects,
InWidgetStyle.GetColorAndOpacityTint() * BlockHue.HSVToLinearRGB()
);
}
const TSharedRef< ISlateRun > Run = StaticCastSharedRef< ISlateRun >( Block->GetRun() );
int32 HighestRunLayerId = TextLayer;
const TSharedPtr< ISlateRunRenderer > RunRenderer = StaticCastSharedPtr< ISlateRunRenderer >( Block->GetRenderer() );
if ( RunRenderer.IsValid() )
{
HighestRunLayerId = RunRenderer->OnPaint( Args, LineView, Run, Block, DefaultTextStyle, AllottedGeometry, ClippingRect, OutDrawElements, TextLayer, InWidgetStyle, bParentEnabled );
}
else
{
HighestRunLayerId = Run->OnPaint( Args, LineView, Block, DefaultTextStyle, AllottedGeometry, ClippingRect, OutDrawElements, TextLayer, InWidgetStyle, bParentEnabled );
}
HighestBlockLayerId = FMath::Max( HighestBlockLayerId, HighestRunLayerId );
}
// Render any overlays for this line
const int32 HighestOverlayLayerId = OnPaintHighlights( Args, LineView, LineView.OverlayHighlights, DefaultTextStyle, AllottedGeometry, ClippingRect, OutDrawElements, HighestBlockLayerId, InWidgetStyle, bParentEnabled );
HighestLayerId = FMath::Max( HighestLayerId, HighestOverlayLayerId );
}
return HighestLayerId;
}
// draw title
void ShellTitle::Render(unsigned int aId, float aTime, const Transform2 &aTransform)
{
//#define USE_TITLE_VERTEX_ARRAY
#ifdef USE_TITLE_VERTEX_ARRAY
static Vector2 vertexarray[32768];
static unsigned int colorarray[32768];
Vector2 *vertexptr = vertexarray;
unsigned int *colorptr = colorarray;
#else
glBegin(GL_QUADS);
#endif
// draw title bar
for (int row = 0; row < SDL_arraysize(titlemap); ++row)
{
float y0 = titley + row * titleh, y1 = y0 + titleh;
#ifdef USE_TITLE_VERTEX_ARRAY
unsigned int color = (xs_RoundToInt(255*baralpha[row]) << 24) | 0x00505050;
*colorptr++ = color;
*colorptr++ = color;
*colorptr++ = color;
*colorptr++ = color;
*vertexptr++ = Vector2(0, y0);
*vertexptr++ = Vector2(640, y0);
*vertexptr++ = Vector2(640, y1);
*vertexptr++ = Vector2(0, y1);
#else
glColor4f(0.3f, 0.3f, 0.3f, baralpha[row]);
glVertex2f(0, y0);
glVertex2f(640, y0);
glVertex2f(640, y1);
glVertex2f(0, y1);
#endif
}
// draw title body
unsigned short *titlefillptr = titlefill;
#if 1
#ifdef USE_TITLE_MIRROR_WATER_EFFECT
// starting mirror properties
float mirror_y0 = MirrorWaveY(titley - titleh);
float mirror_d0 = MirrorWaveX(mirror_y0);
float mirror_a0 = mirroralphastart + mirroralphadelta * mirror_y0;
#endif
for (int row = -1; row < (int)SDL_arraysize(titlemap) + 1; ++row)
{
float y = titley + row * titleh;
#ifdef USE_TITLE_MIRROR_WATER_EFFECT
// row mirror properties
float mirror_y1 = MirrorWaveY(y + titleh);
float mirror_yd = (mirror_y1 - mirror_y0) / titleh;
float mirror_d1 = MirrorWaveX(mirror_y1);
float mirror_dd = (mirror_d1 - mirror_d0) / titleh;
float mirror_a1 = mirroralphastart + mirroralphadelta * mirror_y1;
float mirror_ad = (mirror_a1 - mirror_a0) / titleh;
#endif
for (int col = -1; col < (int)SDL_arraysize(titlemap[0]); ++col)
{
float x = titlex + col * titlew;
if (*titlefillptr != 0)
{
int phase = *titlefillptr >> 9;
int fill = *titlefillptr & 0x1FF;
// get block color
float R, G, B;
float h = BlockHue(col, row);
bool border = (fill & ~(1<<4)) != 0;
HSV2RGB(h + phase * 0.5f + border * 0.5f, 1.0f, 1.0f - 0.25f * border, R, G, B);
// for each block...
for (int i = 0; i < 9; ++i)
{
// if the block is filled
if (fill & (1 << i))
{
// block borders
float x0 = x + block[i][0][0];
float x1 = x + block[i][0][1];
float y0 = y + block[i][1][0];
float y1 = y + block[i][1][1];
// upright
#ifdef USE_TITLE_VERTEX_ARRAY
unsigned int color = 0xFF000000 | (xs_RoundToInt(B * 255) << 16) | (xs_RoundToInt(G * 255) << 8) | (xs_RoundToInt(R * 255) );
*colorptr++ = color;
*colorptr++ = color;
*colorptr++ = color;
*colorptr++ = color;
*vertexptr++ = Vector2(x0, y0);
*vertexptr++ = Vector2(x1, y0);
*vertexptr++ = Vector2(x1, y1);
*vertexptr++ = Vector2(x0, y1);
#else
glColor4f(R, G, B, 1.0f);
glVertex2f(x0, y0);
glVertex2f(x1, y0);
glVertex2f(x1, y1);
glVertex2f(x0, y1);
#endif
#ifdef USE_TITLE_MIRROR_WATER_EFFECT
if (mirror_a0 > 0.0f || mirror_a1 > 0.0f)
{
// mirrored
float m0 = y0 - y;
float m1 = y1 - y;
float a0 = std::max(mirror_a0 + mirror_ad * m0, 0.0f);
float a1 = std::max(mirror_a0 + mirror_ad * m1, 0.0f);
float dx0 = mirror_d0 + mirror_dd * m0;
float dx1 = mirror_d0 + mirror_dd * m1;
float yy0 = mirror_y0 + mirror_yd * m0;
float yy1 = mirror_y0 + mirror_yd * m1;
#ifdef USE_TITLE_VERTEX_ARRAY
color &= 0x00FFFFFF;
color |= xs_RoundToInt(a1 * a1 * 255) << 24;
*colorptr++ = color;
*colorptr++ = color;
*vertexptr++ = Vector2(x0 + dx1, yy1);
*vertexptr++ = Vector2(x1 + dx1, yy1);
color &= 0x00FFFFFF;
color |= xs_RoundToInt(a0 * a0 * 255) << 24;
*colorptr++ = color;
*colorptr++ = color;
*vertexptr++ = Vector2(x1 + dx0, yy0);
*vertexptr++ = Vector2(x0 + dx0, yy0);
#else
glColor4f(R, G, B, a1 * a1);
glVertex2f(x0 + dx1, yy1);
glVertex2f(x1 + dx1, yy1);
glColor4f(R, G, B, a0 * a0);
glVertex2f(x1 + dx0, yy0);
glVertex2f(x0 + dx0, yy0);
#endif
}
#endif
}
}
}
++titlefillptr;
}
#ifdef USE_TITLE_MIRROR_WATER_EFFECT
// mirror shift row
mirror_y0 = mirror_y1;
mirror_d0 = mirror_d1;
mirror_a0 = mirror_a1;
#endif
}